Malicious PDF — malware analysis report

Static analysis result for SHA-256 30007a0ed27a1754…

MALICIOUS

PDF

94.0 KB Created: 2021-07-26 14:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0d3f36baf6c5e133b14c61f756878118 SHA-1: a12d0e75cebedfda96d39ae9b5895d164038f9ee SHA-256: 30007a0ed27a1754cd511ed9c951c1f8808940dff5bff153d78ab9e1d4152e39
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The document contains a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure indicate a malicious intent to redirect users to potentially harmful sites.

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
  • 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 http://gamax-motor.cz/data/dokumenty/kogasiradozadowob.pdf In PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/q1b9jqmdt9c8mmjnsueajfbq9h/jolanewosejo.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/722ff53b845a441928d58af131657331/39688578774.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/tenilozexufumepefofo.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/a74dfb2e0a39eeb9d78e209477c2762d/7633294267.pdfIn PDF document text
    • http://vorne-sitzen.eu/pcms/content/file/tapumoveven.pdfIn PDF document text
    • http://hyundaiokla.com/uploads/files/59004494915.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9138a39847---73365159439.pdfIn PDF document text
    • http://glenbardwest1965.com/clients/0/00/000b938fadf99fc3242526d4297efebf/File/47408288215.pdfIn PDF document text
    • http://www.moyekolodin.com/files/ruriwotirenikozonuni.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/19mo8re7h8fusmm2rciol9t2d3/53564670519.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/6faa7a38d46e584fd9486f57803851ce/kusoka.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/bcfeff829aec449238005f71c8dec8d3/wasagisovijotimuvosivit.pdfIn PDF document text
    • http://omeofest.eu/userfiles/files/75526341147.pdfIn PDF document text
    • http://pogologistics.com/ckfinder/userfiles/files/vadorijopufijij.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16072f3b8c3eb6---4312050970.pdfIn PDF document text
    • http://hsound.ro/images/custom/file/41823627741.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/7a7b51d1ba389364cdca8669f0f00dfb/xizomi.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a1da46118b9---tanokowomu.pdfIn PDF document text
    • https://oncallanatomist.com/ckfinder/userfiles/files/15195320909.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d31a4627c---97507620.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/1ku8o48f6nnhgfp9tpdpo61ro7/setuvezenu.pdfIn PDF document text
    • http://leilehua76.com/clients/4/4d/4d80c013f15dbe3c797666a457780dca/File/1120383845.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=how+to+get+a+nm+crs+numberPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF216 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2D 10752 bytes
SHA-256: 4e8990c9ff2d5b52386734a442f7c90af7c358516ef4a3cc3c33b67c818ae904
font_02_sfnt_off000122f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F5 16632 bytes
SHA-256: e896d0c9c6509c93731645541c0836c845742b74f7fde2e8ff5e94baacc6a6a0
font_03_sfnt_off00013a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A82 18372 bytes
SHA-256: d9be37ca74091bd3a66852d4593c6be6fcc1ae9d0315646adba004f2f4b3715b

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