Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e869ef36ae39a1…

MALICIOUS

PDF

72.7 KB Created: 2021-06-06 06:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a12a91af39a75a540e3adda37f9b7b71 SHA-1: c088e082dac84c388385a18d002ee17b589db97a SHA-256: 56e869ef36ae39a11629d93ff32004c8355b0db0b52c06d410c0915ce20c42fa
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content or phishing sites. The presence of external URIs and the overall structure strongly suggest an attempt to lure users to external resources, likely for malicious purposes.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://irlanc.ru/pbw?utm_term=how+long+do+sealed+terrariums+last PDF link annotation
    • https://zurenigexozaxil.weebly.com/uploads/1/3/4/6/134606750/kalefoxupo-jalubi-wuzazojet.pdfIn PDF document text
    • https://pezujotage.weebly.com/uploads/1/3/4/3/134318684/gogevodutafiluxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485579/normal_5ff667b923347.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420602/normal_60360f19cb376.pdfIn PDF document text
    • https://bokirises.weebly.com/uploads/1/3/1/6/131607331/5560449.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4459177/normal_60b46acb61a44.pdfIn PDF document text
    • https://xexasatokotubeg.weebly.com/uploads/1/3/4/3/134354060/17a8c4a5b66a4d.pdfIn PDF document text
    • https://zopogunonezaso.weebly.com/uploads/1/3/1/6/131637395/20e69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407069/normal_5ff7b6fab1664.pdfIn PDF document text
    • https://pukelubaluwo.weebly.com/uploads/1/3/4/7/134741361/mevewiket-zofepaxez-kuzatene.pdfIn PDF document text
    • https://gexemuxu.weebly.com/uploads/1/3/5/3/135394015/4650555.pdfIn PDF document text
    • https://sibanixo.weebly.com/uploads/1/3/1/3/131380297/bigaziro_mobasuma.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458616/normal_60035f3d40d5b.pdfIn PDF document text
    • https://jerepukiw.weebly.com/uploads/1/3/2/6/132681878/jubomudo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sujagajo.pbworks.com/w/file/fetch/144686229/58558075533.pdfIn PDF document text
    • http://fuxijovipa.pbworks.com/w/file/fetch/144614700/padijivotepudadibufin.pdfIn PDF document text
    • http://kimotamiju.pbworks.com/f/basketball_diaries_movie_online_free.pdfIn PDF document text
    • http://ximusutoj.pbworks.com/w/file/fetch/144696588/19170346394.pdfIn PDF document text
    • http://ropotupi.pbworks.com/w/file/fetch/144686166/40641528934.pdfIn PDF document text
    • http://betosaxugawi.pbworks.com/w/file/fetch/144648588/59666374770.pdfIn PDF document text
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5D 5200 bytes
SHA-256: 2bdcc73766e76964ae0d6104cbe9a5e155a16125b95acec5efe02ce41be2c722
font_01_sfnt_off0000f109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF109 10720 bytes
SHA-256: 822e1e73d7fba46ca7c89ff474cd9a17326284de928bed44415742cec0eafdcc

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