Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7271c5a0ea96dbd…

MALICIOUS

PDF

80.5 KB Created: 2021-06-08 15:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9c45b6bbe5d180fb7c6c83bf21c63806 SHA-1: cc06e03ba441119fff95a1ba0149c5323b6e854f SHA-256: b7271c5a0ea96dbd622b5b4b6466568747b84d2bfc4d6d218fcee4a6c8abcbe6
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or scam attempt. It contains numerous external links, including one to 'archism.ru', suggesting it's designed to redirect users to potentially harmful websites. The document body, though heavily obfuscated, appears to be a lure related to washing mattress protectors, a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://archism.ru/pbw?utm_term=how+to+wash+mattress+protectors PDF link annotation
    • https://zabonipe.weebly.com/uploads/1/3/4/4/134487368/kovofugivumasa.pdfIn PDF document text
    • https://ledosixekesi.weebly.com/uploads/1/3/4/3/134313849/81010916b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455185/normal_5fdb76d9efa89.pdfIn PDF document text
    • https://gogalafubixuvu.weebly.com/uploads/1/3/4/6/134642314/1993236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_601b45a2a0c11.pdfIn PDF document text
    • https://numibogag.weebly.com/uploads/1/3/4/3/134323011/viwoxorin-laxadubawalesag.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/6c467b422.pdfIn PDF document text
    • https://lurutedus.weebly.com/uploads/1/3/4/7/134775874/tumulalizanetujam.pdfIn PDF document text
    • https://tenekivosorudo.weebly.com/uploads/1/3/4/5/134596066/jolosenogawa-papakevadomuzoz-jesat.pdfIn PDF document text
    • https://zibabesisem.weebly.com/uploads/1/3/4/6/134670176/kuzatogevotiwemowe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410418/normal_5fc70cbaa45a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://buvavipoluvu.pbworks.com/w/file/fetch/144424998/iso_interested_parties_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eea3bf10-a688-4ca6-ad20-31227f07cfc5/bigobetokifexulibajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67592f93-0c72-45aa-84d8-344cc89cd0d4/sugamanogan.pdfIn PDF document text
    • http://siruzosu.pbworks.com/w/file/fetch/144476028/77833727733.pdfIn PDF document text
    • http://lomexalipele.pbworks.com/f/bosizaw.pdfIn PDF document text
    • http://jifesepapo.pbworks.com/w/file/fetch/144741321/zaziwaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b53faffd-71f4-43bd-b949-c4d15b181956/sanyo_rice_cooker.pdfIn PDF document text
    • http://pefagisunel.pbworks.com/f/12346278404.pdfIn PDF document text
    • http://dibesusajob.pbworks.com/w/file/fetch/144831078/83515255992.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF124 4828 bytes
SHA-256: 26e87269ce3c48fc26e4e7ebcf612c68fddaad9bc8a038da4f44b56d4c20d570
font_01_sfnt_off00010193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10193 11224 bytes
SHA-256: 9483d8d5dfde7370e400c4203202e6fdd44a80192da867ec598fe334ae3f7019
font_02_sfnt_off000126a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126A3 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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