Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d27803ef33ca8e…

MALICIOUS

PDF

89.3 KB Created: 2021-06-28 11:25:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 5e2dae7df07375bfa0f84644b4266ba4 SHA-1: fdf988f8ed54d61f10b754fdde9318bde67ab928 SHA-256: 04d27803ef33ca8e9d21c3afaee1ccb963eb17e157be13ea10cfd86b6b2b058c
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document functions as a link farm, containing numerous URLs that point to external resources, some of which are hosted on compromised CMS upload directories. The primary purpose appears to be directing users to potentially malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • 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.
  • 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://dotcomtravelegypt.com/userfiles/files/rafosifimomofowukoji.pdf In PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/a9b6accdaf74c0713ef586da9dd06e9e/pidixuguwexikezonuretowex.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/69796176362.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/5851d624c36fb8da0b0ba384a43ae38e/8049061299.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ff666928de---52820604008.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8a2f1d73e8f456dfe40b89bde42f6c66/16050470014.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/70876229117.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/3da2ce98a97ea09ef5e48deba6524f63/zekawesiwomakunekedagewo.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/7e119ea46a5ff20c6753286d0bfbd4fc/6287662228.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/b865662bed5c8ec91a91e82b35c68df0/40876941644.pdfIn PDF document text
    • https://unosms.us/userfiles/file/24732719258.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160c8624a34ae8---59263105151.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081185e5ffd2---midor.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/0h2n5bipmmsgaq3fe3fsl81097/jazibofonenekivekuwis.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16076ef2685fa8---fejumozolufida.pdfIn PDF document text
    • http://graviroz.hu/ckfinder/userfiles/files/1839012713.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091af6b9a36b---83511111766.pdfIn PDF document text
    • http://titusrelay.com/clients/e/ef/ef304ccc03541e9e6382bef5f13b0a7d/File/91923455908.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bcff3bba172---jiwexoga.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/duzukukutidezinotolav.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/46b079099f1ae17211c8082d542e55eb/wurolovibopa.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b37747313ed---tugixo.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/86217421900.pdfIn PDF document text
    • http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070fa3f55931---kitotutominutekipomomusi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=telecentre+entrepreneur+course+questions+and+answersPDF 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_off0000f77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77A 10804 bytes
SHA-256: 648e6a677e250ddffd7950426733ffec9f2e8a179c7be523225290185e987e37
font_01_sfnt_off00011054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11054 17372 bytes
SHA-256: 5925108f166a7aef3602c04121375a0e6c6e425182e00e0cc990bd02cf5f368a
font_02_sfnt_off00013d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D38 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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