Malicious PDF — malware analysis report

Static analysis result for SHA-256 f09f580c372953d2…

MALICIOUS

PDF

88.0 KB Created: 2021-09-16 18:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c86b1ca51161347659a104b7dc1c32ea SHA-1: fda3b3b62891d3b87e9b729c40394a9f003aa718 SHA-256: f09f580c372953d25bd55ea0731cb59e49b421f8e12cc58f0b2788c303413b61
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to potentially compromised websites, suggesting a link farm or phishing lure. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to prompt the user to call a phone number, a common tactic in tech support scams or billing fraud schemes. While no scripts were directly extracted, the presence of multiple embedded URLs and the ML classification strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://nocenzura.space/web/img/podborky/files/govuruzakaxifixur.pdf In PDF document text
    • https://amoslodge10-org.alljobsinliberia.com/ckfinder/userfiles/files/xepifabofugokemi.pdfIn PDF document text
    • http://npcbalkan.net/ckeditor/ckfinder/userfiles/files/55000240554.pdfIn PDF document text
    • http://oralrem.kz/ckfinder/userfiles/files/10962513224.pdfIn PDF document text
    • http://dynamicyunnan.com/ckfinder/userfiles/files/wejovusupulexazuxotapa.pdfIn PDF document text
    • https://regaluxiluminacion.com/uploads/assets/file/53778537762.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/16132a29987ecf---15418022471.pdfIn PDF document text
    • http://thietbikhachsanvinhhung1.com/upload/files/goriremalagojivugabes.pdfIn PDF document text
    • http://tokyoracing.hu/userfiles/file/gupoxitadad.pdfIn PDF document text
    • http://www.gpe-el.pro/ckfinder/userfiles/files/94810353007.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612eccfceba37---latuvalukakileloda.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/vuboxisubetasuxu.pdfIn PDF document text
    • https://chameleoncoupons.com/adgprocessing/uploads/files/pawevulug.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/16092333355.pdfIn PDF document text
    • http://pileki.com/imgup/file/vejin.pdfIn PDF document text
    • https://www.domaine-vrignaud.com/ckfinder/userfiles/files/49090672353.pdfIn PDF document text
    • https://lekkermooi.nl/userfiles/file/makol.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5102e8218---60629663732.pdfIn PDF document text
    • http://firmen-bekleidung.at/userfiles/file/92109243890.pdfIn PDF document text
    • https://episcopiaoradiei.ro/files/bezesumikewokafefad.pdfIn PDF document text
    • http://zit-tech.com/userfiles/files/borugaxu.pdfIn PDF document text
    • http://www.truca-taoules.com/ckfinder/userfiles/files/zipisotowikipexuwabizu.pdfIn PDF document text
    • http://bjaimama.com/data/upload/2021/09/file/202109022207211414.pdfIn PDF document text
    • http://zenithmetals.com/files/dulifibajegatarolejo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=remove+email+from+android+phonePDF link annotation
    • 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_off0000f1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CF 18592 bytes
SHA-256: e43f4f272bcce59a917e3c60374fc45b382ff0d40e043d547987c04851ecb72d
font_01_sfnt_off000121eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A02 10608 bytes
SHA-256: fb5250182a9093270ba5bb76449910603a5853d1c2ef89ae3168beb14eed2f0d

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