Malicious PDF — malware analysis report

Static analysis result for SHA-256 67784e32edd6bfa3…

MALICIOUS

PDF

111.2 KB Created: 2021-06-28 08:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2699edb6d2279336f7ea58fd29110bdf SHA-1: d40c6dffc72788272d84b1760ece9b421ca20322 SHA-256: 67784e32edd6bfa3dac8581558694ade5e01bb265f223f84ccf01927c2910f7d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link farm, directing users to multiple external URLs hosted on compromised CMS uploads and disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document designed to lure users to external sites.

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 http://mai-colle.jp/userfiles/file/moziguxaposovefukufuror.pdf
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609088310729a---14270491390.pdf
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/3a9606318ebbea62f450ef7eacbe171f/41992492249.pdf
    • http://capmar.eu/userfiles/file/fosisatusawimagomiwu.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/7bf3fa0734a4e850fa6253a8713e140f/bonerixanas.pdf
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/36869addc9db1091f3e862a831691a1a/22860707966.pdf
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9d3a3412c---83565313718.pdf
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/13d90d3f7310e79d28af8562ae1a52fe/39780527960.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0ec9149e2---kilesivawibazimikake.pdf
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/0d490a88f7d004d891d20f3a47482d61/642633328.pdf
    • http://weifong.tw/fckimages/file/87582153108.pdf
    • https://daquin-ferriere.fr/userfiles/file/139968774.pdf
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/mqm11aeb39c53494aol1kb4que/xuduko.pdf
    • http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/levodedixesofupovu.pdf
    • https://ayurvedaemart.com/uploads/file/misijabofawuduvek.pdf
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/8u27m4v2qtf1h72k68nbm479j0/24002596648.pdf
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/8c0f1170998e877e5ae481a64f8ac417/15616393737.pdf
    • https://geneolock.com/locktactyuma/userfiles/file/kizup.pdf
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096f8bad4b98---2596316690.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607af80ab9179---98575066075.pdf
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160795912d1204---34836318034.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/6a8b389f6b1ee03fe7de2f18708a8e30/78031319718.pdf
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c7bb9217d8f---kojufuj.pdf
    • http://stalmost.pl/userfiles/file/rujapu.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=the+happiness+trap+pdf+free+download
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103c1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x103C1 16792 bytes
font_01_sfnt_off00011bcf.bin
7c38107c3f6cf1142f343b64edbaf4f0d21d896ae4b0080a0fdb108b9c4d8f3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCF 25452 bytes
font_02_sfnt_off00016534.bin
19bcbe82890bcc1dadbe60ae8adf5d812a8c4680b87656f7610bd4545061a3f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x16534 20396 bytes
font_03_sfnt_off00019692.bin
369f53ac3362c8f792e0a21f8bfc613126ba1f0171276c9c16b2c7ce88838ab1
pdf-font-stream PDF embedded font (sfnt) at offset 0x19692 10644 bytes