Malicious PDF — malware analysis report

Static analysis result for SHA-256 710a99814528467b…

MALICIOUS

PDF

88.5 KB Created: 2021-09-20 08:16:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9d62bd23994cefaa3e1282aaf3fac5c2 SHA-1: b7bd6891b7563ab5af52c6a60f3cf07c4cb601ac SHA-256: 710a99814528467b518f2fe1999c13ddea3b9449ee9dd7f99b25d2359432d21e
196 Risk Score

Malware Insights

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

This PDF document has been classified as malicious by ML models and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external URLs hosted on potentially compromised or disposable domains. The presence of a 'Clipboard command execution lure' heuristic suggests the document may attempt to trick users into executing commands, further increasing the risk.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 https://coretry.ru/uplcv?utm_term=moto+android+sdk PDF link annotation
    • https://dijitalsanat.link/upload/files/21393801964.pdfIn PDF document text
    • https://kultmotor.hu/images/files/suwabikebuwetolaxalo.pdfIn PDF document text
    • http://shiokuda1.com/contents/files/tegowenavatefewub.pdfIn PDF document text
    • https://cartolmania.it/file/58559207575.pdfIn PDF document text
    • https://mimpidia2.com/contents/files/ditemog.pdfIn PDF document text
    • http://jobsandhi.com/uploaded_files/userfiles/files/putidosukup.pdfIn PDF document text
    • https://korvioinfotech.com/ckfinder/userfiles/files/magalofi.pdfIn PDF document text
    • http://bbhshipyard.com/userfiles/file/96696446570.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/acc9404aa4bd31593c86d43677dc2e73/83941907850.pdfIn PDF document text
    • https://phucatgarment.com.vn/ckfinder/userfiles/files/gotuk.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612faf9fa2783---64072188134.pdfIn PDF document text
    • http://mesterteto.hu/userfiles/file/dimopidi.pdfIn PDF document text
    • https://attack.lt/images/files/nakutumawidujeka.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/nokesirotoxelojuzebotafef.pdfIn PDF document text
    • https://ptogel1.com/contents/files/69286271221.pdfIn PDF document text
    • http://npk-bypassdrr2.com/file_media/file_image/file/2636559373.pdfIn PDF document text
    • http://canavesiobruno-architetti.it/userfiles/files/33178605402.pdfIn PDF document text
    • https://eastmangroupllc.net/ckfinder/userfiles/files/tenukomagamadosig.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/6e8dab53a05b576bcb4157516144ac7f/58339150610.pdfIn PDF document text
    • http://biometria.pl/photos_fck/file/negogugogusisobejag.pdfIn PDF document text
    • http://abwclayton.com/uploads/files/nonok.pdfIn PDF document text
    • https://ddc-touggourt.dz/ar/files/37749891799.pdfIn PDF document text
    • http://zsmnowakowski.pl/userfiles/file/fukub.pdfIn PDF document text
    • http://ibrahimalsada.com/pics/file/masesoloxeve.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC4 10148 bytes
SHA-256: 431701e6eeae039e37f53206ca7f79bcb347bf560d48d53e2b094017c4939ea1
font_02_sfnt_off0001228f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1228F 19112 bytes
SHA-256: 6d273110509ae4fe0fefd05a62ef65c4383039f9439ea42929e5cc742143471d

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