Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95f9947b15ac094…

MALICIOUS

PDF

109.8 KB Created: 2021-07-19 00:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 7879671d8fb708ae3895e44af91e8bf3 SHA-1: e78970c2f0ce6307697d204b4977a563db8985d7 SHA-256: e95f9947b15ac094962dfc69cf0641be2558fe4fc56174ce8756a5b2f0ebf370
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are identified as compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body is unreadable, but the heuristics point to a link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/ed5184af013b4f7489dd3b3af6a59668/pujosamizike.pdf In PDF document text
    • http://staractivecollection.com/resimler/site/files/dejinuxefa.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8c54e4d5d---29104548456.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e08e323abb---3204068449.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca5a3de696---24051860945.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160bc56e8cb563---kolodasujekeloxe.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/140ltbvmlfin3cmloq4rdmvpb4/61967221424.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a724fbf95510a7b621fb6c67b9aa9cfc/60671319380.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/77163336436.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160b802ca1962f---merazowopevi.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160921a81257f8---zuxazesolusagotituteg.pdfIn PDF document text
    • http://artanuji.ge/admin/ckeditor/ckfinder/userfiles/files/petilevavamimego.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac92372227---45609628482.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/a905b62eccdde59db320c4aa03c9bfaf/gadigawipob.pdfIn PDF document text
    • http://habitat3.eu/userfiles/files/goraperotise.pdfIn PDF document text
    • http://caopump.com/admin/userfiles/file/78266417834.pdfIn PDF document text
    • http://thunderstar.cn/userfiles/file/20210714001318648275286.pdfIn PDF document text
    • https://leganordavigliana.it/uploads/file/tetajikin.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/q6h30h5tn2ott7e6oh0vjpiaj4/kegusumaguluxexixokiri.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/33effbe65d2b312b3743ae742bf11e50/96845519213.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210706211519978.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b34fd820dd5---96209595632.pdfIn PDF document text
    • http://mu-rrrc.com/userfiles/file/2794342199.pdfIn PDF document text
    • https://combrooncom.com/contents//files/94947773696.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/clpajbphr041ld7i2lfgn272pr/98649518138.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=solomon%27s+temple+holy+of+holiesPDF 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_off000127bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127BF 17092 bytes
SHA-256: e42c719ec7bbcf9b828286eae480bad6edba5e776f293fe4ba3b0f87dcd82c5f
font_01_sfnt_off000140d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000158e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158E8 10584 bytes
SHA-256: 45264afd7aaa8b59f333fe9ad9c97772e320f0fcbb61bbe383cc55b24c2cb3d8
font_03_sfnt_off000170e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170E1 22940 bytes
SHA-256: eb495ef21bd6c6fe4f18333fea0e9e52426cd669e44029ef0bc4c4fafd06f3e4

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