Malicious PDF — malware analysis report

Static analysis result for SHA-256 367be2e288048446…

MALICIOUS

PDF

73.4 KB Created: 2021-01-17 11:10:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 51d182907a61a7ed45ef44ce4359f590 SHA-1: 9afa3dcca775a4948e7f1801d0082532fc0ddae9 SHA-256: 367be2e288048446d580608a0d11f1cd9acf855da5afd396720672297d7621f1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to disposable hosting or domains associated with malicious activity, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by identifying the PDF as a link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://traffine.ru/aws?utm_term=chrome++failed+android PDF link annotation
    • https://ruloxewetufo.weebly.com/uploads/1/3/1/1/131164393/lalasexogijit_tosisaxiner.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f992c269ae30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421365/normal_5fb43def45427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_5fd8cc85612fa.pdfIn PDF document text
    • https://tagepixibupiz.weebly.com/uploads/1/3/4/5/134586800/wufipa.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/tevoj.pdfIn PDF document text
    • https://tolajugim.weebly.com/uploads/1/3/4/6/134647220/xavamudedifu.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/kowokojig_xinepelefus.pdfIn PDF document text
    • https://fukoxifixe.weebly.com/uploads/1/3/4/4/134460993/4a839003b.pdfIn PDF document text
    • https://zefisuket.weebly.com/uploads/1/3/4/8/134868467/zowegodev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://binalidagu.epizy.com/cursive_writing_worksheets_letter_o.pdfIn PDF document text
    • http://gusalixofunek.epizy.com/tomapunujupano.pdfIn PDF document text
    • http://lawupoxag.epizy.com/resistivity_and_sheet_resistance.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/89507018407.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/jolaxejibalofofe.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/43399202773.pdfIn PDF document text
    • http://vinetewexe.epizy.com/noxavu.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e31a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31A 4876 bytes
SHA-256: a0fc30b64ba148021dabe894c3941de34033577cc3f785ab492c06d873c129ae
font_01_sfnt_off0000f379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF379 10696 bytes
SHA-256: 3954e1f1232016bb6fc0f7143c373ce60c19456107ce33d7ce932edc61d4808f

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