Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a058bcb2c9e5760…

MALICIOUS

PDF

85.3 KB Created: 2021-06-18 20:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 23285e5fd150882b73042785ad97d0b3 SHA-1: 973e3ce3c80404e75863964ec9667662c18402c5 SHA-256: 3a058bcb2c9e5760b656960624ac854086f824861283ebdb8cd42ad4f5840a31
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/051723b91ce2ad5c7d0b6b1da628da8e/46503039176.pdf In PDF document text
    • http://bukharageorgia.com/sites/default/files/file/6181284761.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/4a56bc16fc20e77b9537163d8fe2593c/97805299627.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/e3958b168ae266da8714b283afa4ef4d/43801894947.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vedidijuwaziwajejuru.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/28fe28b4d3cac32ae32991b7bc738650/95830664251.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6b5b8900a62ee58c5c28fbbb9a9c9d1f/parewanaviwiduv.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/65da4666a0157f6a804780bca15c6dcc/13999191762.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd63e8cadb---nafekenedojidof.pdfIn PDF document text
    • http://berbun.com/user_img/file/pemilirovuvazadolawonovi.pdfIn PDF document text
    • https://andana.us/files/files/levizekidutebulepijav.pdfIn PDF document text
    • https://speeddating.lt/speeddating/ckfinder/userfiles/files/79824360814.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/debd685000f30053c37a860fbf5c6af6/vofumadabezituzenajepazod.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1607522c67b788---sivizatosikodudul.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/of8934jm11onjmufl3ssq9kodp/7241270728.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/duzewulekabagudonew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=prepare+the+journal+entries+to+record+the+following+transactionsPDF 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E9 5588 bytes
SHA-256: 58c8c8502c2430db4c98eb61e44fdeee6aeeeb34087990c7c45a14f8095d5736
font_01_sfnt_off00010af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF7 10992 bytes
SHA-256: c434cfcb5ede097f0184d72fecbd193038e2d76f1a46e84d8ee987f7d4845589
font_02_sfnt_off0001306d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1306D 16084 bytes
SHA-256: 492b72e9e8f0bcef963ad10e88f80b5598216a8c56d4f3a27963a6a5716a4957

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