Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a9e2465d21b914…

MALICIOUS

PDF

106.9 KB Created: 2021-09-14 09:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 1a6f3303fe5ecf855a0386b0656ebb99 SHA-1: 99325513e035b6dab0176b5fcd73303c732fdee9 SHA-256: 06a9e2465d21b914e706c62a225d0c3f98910c2231cf6f153122f93d076c6386
176 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and heuristics indicate it functions as a link farm, directing users to potentially compromised or malicious websites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. The presence of a QR code lure heuristic further supports a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://pixomot.ru/uplcv?utm_term=cheat+tap+tap+heroes PDF link annotation
    • http://ropesadventure.com/d/files/67337839427.pdfIn PDF document text
    • http://lehnerkom.de/images/uploaded/file/zamijozetonurufew.pdfIn PDF document text
    • http://adacu.org/userfiles/file/20210901215703.pdfIn PDF document text
    • http://brickchamber.com/ckfinder/userfiles/files/96295546049.pdfIn PDF document text
    • http://lamay.de/userfiles/file/50132655452.pdfIn PDF document text
    • http://malifer.hu/upload/file/kilage.pdfIn PDF document text
    • http://www.bash.cl/media/file/mesabeduzeverizukixuvo.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb60227c4c---letugokugi.pdfIn PDF document text
    • https://ixiu-23.com/uploads/files/202109081545405113.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/86327219f503bcff1ad975a37f7e55dc/loxewugemure.pdfIn PDF document text
    • http://ipcmanpower.com/admin/style/images/userfiles/file/65724825993.pdfIn PDF document text
    • https://egca.fr/userfiles/file/77619132138.pdfIn PDF document text
    • https://trompis-tondschungel.de/userfiles/file/99915710022.pdfIn PDF document text
    • https://posh.hr/files/suvesoterima.pdfIn PDF document text
    • http://dh-cell.net/ckfinder/userfiles/files/86286310664.pdfIn PDF document text
    • http://jayeonrak.com/upfile_editor/2021/files/xibape.pdfIn PDF document text
    • http://nbc.ua/design/pic/file/pifopozolilipen.pdfIn PDF document text
    • http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/12953125941.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/donoluwixawufaguz.pdfIn PDF document text
    • http://www.donboscovizag.org/images/files/84775329529.pdfIn PDF document text
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/nikobubigezenabadiduj.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/40254193166.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/b2c9b4ad63ff00633b239e546d5037f8/53190968497.pdfIn PDF document text
    • https://ibshospitals.com/userfiles/file/77868683942.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_off00013dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DBC 10136 bytes
SHA-256: 4d7d627dc3cfbf5ee3c2487f03c49c621a225162bc1ed4fde4bf62be4c74deb2
font_01_sfnt_off00015495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15495 18900 bytes
SHA-256: 254b801a93c8529f559ea072ea67d9e27c91483aeeff3a9f382b43f2b84f1133
font_02_sfnt_off000185e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x185E5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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