Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc58c584f614263…

MALICIOUS

PDF

93.3 KB Created: 2021-09-03 09:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 443b4567d01a9974ca6f305b154c5dde SHA-1: f8249c549a6c0a828cce416b8967e55823f94fe3 SHA-256: 3cc58c584f6142632998d8c8b1fc52ae028575f8fdf8a5cc3483cc4ab39ec247
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of 'cmd08vvcjlls6d92ofg81/lefelikalukiwe.pdf' in the document text suggests an attempt to disguise or obfuscate a command execution path.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://chargers68-50th.com/clients/3/3d/3dd154274af4887fbe356f6dcfc18689/File/91764941554.pdf In PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1609832f5e34ef---sibulafazarepiwepaveziloz.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/3bc1c69213c7802e6bc902913bee8961/62670295514.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/tunalineraro.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609d43f4197ba---defixurikejuv.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c1caecc3bc7---kikuguratun.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/64761953651.pdfIn PDF document text
    • http://budka39.ru/files/tamamuvotarod.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e99002dcaf---84270173332.pdfIn PDF document text
    • https://webvitamin.vn/app/webroot/uploads/files/visaxefilap.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/5cd5749ee0236ef51d8bd4600905a02a/kitonivekiwewolexel.pdfIn PDF document text
    • https://tantecoccole016.it/file/76799998636.pdfIn PDF document text
    • http://abwcolley.com/uploads/files/boluponojoliwadagopi.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/72b0ae2a50a05d899d97587d80135336/bidobonediz.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/bb7mfcmd08vvcjlls6d92ofg81/lefelikalukiwe.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5b495faef---xowumelijakabolul.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/93434431360ff6f8a1193a.pdfIn macro / runtime command snippet
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160c9495e2b6fa---pipufasotololore.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/1f1656944146e051ffbc67f9a36a68cf/fusifupajibuzetapawu.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/piwuberusuragi.pdfIn PDF document text
    • https://isosklo.cz/uploads/92450247039.pdfIn PDF document text
    • https://kientrucqhouse.com/uploads/image/files/niwirenafalo.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/0a5t2gghl81lgmeqra2ggi8la1/77387614279.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160979e88c119d---dutelimewobubukokavufadeb.pdfIn PDF document text
    • http://nek.ua/wp-coIn macro / runtime command snippet
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=gas+turbine+brayton+cycle+pdfPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/f2a8f20c302a06abbf48d053f1d4b8d2/5781635596.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10237 19648 bytes
SHA-256: 896e2a152952b60fb777d8ccd7ab62caefc772597864893128b9a0b3af02d290
font_01_sfnt_off00013624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13624 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E3B 11004 bytes
SHA-256: 72719ce0d6e6acef3ae8484f2e6845ed5681140e4806e57a5edce7659f36e5e1

Open this report in the interactive analyzer, or submit your own file for analysis.