Malicious PDF — malware analysis report

Static analysis result for SHA-256 9732da9296e23956…

MALICIOUS

PDF

153.7 KB Created: 2021-06-25 19:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dbeb2bf93e6fb47be9e6aa27b1ac9d7f SHA-1: 61db37403b99a4e58b27f56aaea8ec123259d393 SHA-256: 9732da9296e239569760df13f49a1a00d49aa36881571086a476fd1f60ad37fe
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing to numerous URLs, many hosted on compromised WordPress sites or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure and URL patterns are consistent with a phishing lure designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 6

  • 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.
  • 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://campfirewtx.org/userfiles/file/53520024189.pdf
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/e266d30c0f9f668225c2a182622171b9/xavoxevivuwiv.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba18b1670f---57524585815.pdf
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/8mdjkrfhcpiads3tthpo1d27b6/vowegu.pdf
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/lvloqljb2hpfqvunuof5f4j246/kovikigilefanunarijorebu.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b63626450c---vevawukazukadogenof.pdf
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/hpc11sjtg9a6lcnm2n72n1a74r/bewurakitemato.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/0tqfn72fdjl2c42676f1h4s395/86707396009.pdf
    • https://actorconseil.com/files/file/13367352266.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/fae0b76fee12826531b73463383d684b/90776876157.pdf
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/45mklgi2pouioiqab62l003567/reweruduvewewikuteke.pdf
    • http://enjoybowlramenandpoke.com/uploads/files/20745682683.pdf
    • https://alakharia.com/public_html/userfiles/file/8632900829.pdf
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/533kdfte512o1eds6ic0om7f7o/vawodazelesexokopela.pdf
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606da258402f5---77089379367.pdf
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/11hvol3cr8ah8icd6k1lc4ekqj/roxixezawitedevetimu.pdf
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a6f6cab06---90557361960.pdf
    • http://cafemsoffice.com/userfiles/files/10667546385.pdf
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/0s947pf22mchd6naef6a1mvh75/xibakisagugixa.pdf
    • https://vyrukrc.lt/userfiles/file/zasud.pdf
    • http://fcv-bo.org/data/fcv-bo/userfiles/file/1940743340.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/855ff934067133d88f564de1e515ec10/davosavifoserugipokipibu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=atlas+2+everything+about+drugs+from+a+to+z+pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f4e7.bin
aba8eb088a4f689506da3efdb6629b51c12671b7d9e0a3614354d7ef13590120
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F4E7 18676 bytes
font_01_sfnt_off00022600.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x22600 16792 bytes
font_02_sfnt_off00023e17.bin
02e89d21191bba0cb2a236f9cab44cc51c68d48282a34e4bb67c0bdf13c6cd90
pdf-font-stream PDF embedded font (sfnt) at offset 0x23E17 11528 bytes