Malicious PDF — malware analysis report

Static analysis result for SHA-256 b208e496e8567c0e…

MALICIOUS

PDF

77.1 KB Created: 2021-08-10 01:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a545742953a0fd911d9ce01ce9b8d706 SHA-1: 48fbbce1081fa4ea938b01245d06b0a2da19f9a4 SHA-256: b208e496e8567c0ee59a5c99318c3e509396281663bc89b2891c9fb5242d4a2e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute traffic or host malicious files. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL analysis point to a malicious link distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/gqbffu2b7cegjmgfg3nuulll9h/vuxodipudowixat.pdf In PDF document text
    • https://hoalavender.net/upload/files/33971655498.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/28065045525.pdfIn PDF document text
    • http://wowbond.com/upload/Fckeditor/file/95552896804.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/98727597641.pdfIn PDF document text
    • https://soosekszer.hu/upload/files/wavalodarupabikopesogu.pdfIn PDF document text
    • http://majorpropertygroup.com/userfiles/files/82278859082.pdfIn PDF document text
    • http://canvangdientu.com/images/file/85392127765.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a68420e08---mupivimulesirezilabu.pdfIn PDF document text
    • https://pottoka.info/files/galeria/files/28656730441.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/eb37fa23707e6395d1d37564b69de474/25131635890.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/fadinawagulefajugi.pdfIn PDF document text
    • http://jfkanacon.org/data/userfiles/files/jowolobosimisanulof.pdfIn PDF document text
    • http://suankaew.net/upload/userfile/files/57984130715.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/eccc11f86c47ad5a2f2715ae4b20c2aa/78656210143.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/r7khq768829doclgk1phg5qoq6/61859725946.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/jlmep9hhd2fm8btiq5lru56kef/rirorejunusuwotitoxaxo.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1607cccabc29bf---72703083305.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16070c47bcfec7---pepoduvebusabi.pdfIn PDF document text
    • http://diamondsnspurs.com/clients/12200/File/badelixugulid.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e3345c10f---35222331824.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608701599c99d---gewifameke.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=exercices+d%C3%A9composer+les+nombres+jusqu%27%C3%A0+9999+ce2PDF 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_off0000c2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C9 11676 bytes
SHA-256: 3dcdd9d91da5f14b205fe52df7e7230307ddbdb2c9d6bfcff6b0b0aff428ef96
font_01_sfnt_off0000dde5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F7 18064 bytes
SHA-256: 2ceed582ef90a23c4b3ef4cba568629875b1a24e1a3f442ec8c4bdaae8300d09

Open this report in the interactive analyzer, or submit your own file for analysis.