Malicious PDF — malware analysis report

Static analysis result for SHA-256 014663f900d87ae3…

MALICIOUS

PDF

81.0 KB Created: 2021-02-28 00:22:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 63d22599d06d6bc16efd6f5bf249c462 SHA-1: f79224b693b2d5973974e9960c9b5d891849e8b8 SHA-256: 014663f900d87ae3f1c6a9e7f1731e2f2d0e1a60468fe9f558e8055d8663ee54
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to 'software testing life cycle' to entice users to click on these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/award?keyword=what+is+the+software+testing+life+cycle PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386081/normal_5fd805d2aa07c.pdfIn PDF document text
    • http://tanemazijafawin.medianewsonline.com/52511702230.pdfIn PDF document text
    • http://afracheat6.xyz/jemaxapoviludazg7car.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426421/normal_601a4fc77fb76.pdfIn PDF document text
    • https://dinowupeguf.weebly.com/uploads/1/3/1/3/131379410/siradus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416496/normal_5ffbb69a88204.pdfIn PDF document text
    • http://itawomen.fun/bootstrap_checkbox_form_validationmc3nz.pdfIn PDF document text
    • https://forexegazujolo.weebly.com/uploads/1/3/4/1/134108883/nakuvov.pdfIn PDF document text
    • http://welitizenowem.mywebcommunity.org/12173156863.pdfIn PDF document text
    • https://bovejivisesuja.weebly.com/uploads/1/3/1/3/131384116/aac13bf70c.pdfIn PDF document text
    • https://xutativapejan.weebly.com/uploads/1/3/4/5/134521393/rutenejuwem_zakubuf_tavuvuze_patediw.pdfIn PDF document text
    • https://zefinefan.weebly.com/uploads/1/3/2/8/132816158/begedelaxulera.pdfIn PDF document text
    • http://lupamepo.22web.org/2018_chevy_cruze_premier_owners_manual.pdfIn PDF document text
    • http://dipenoguzel.sportsontheweb.net/89649085410.pdfIn PDF document text
    • https://wilowukodol.weebly.com/uploads/1/3/4/8/134881933/8215221.pdfIn PDF document text
    • http://rejonanujezeke.22web.org/vakipofe.pdfIn PDF document text
    • http://korecos.ru/74342554612154ml.pdfIn PDF document text
    • https://jukirabupunux.weebly.com/uploads/1/3/0/8/130874410/ed4dce18242503d.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://bomiboduju.epizy.com/tunuwoxa.pdfIn PDF document text
    • http://kepofif.onlinewebshop.net/ethical_hacking_tutorial_free.pdfIn PDF document text
    • http://wedagavuvux.epizy.com/77348953304.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_off0000f225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF225 5140 bytes
SHA-256: fbba4fac61c183b5e0bcc3d579e4aa695c966097d737dc7dcdfea598e34b0072
font_01_sfnt_off000103b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B1 10660 bytes
SHA-256: 0887885bc9739b2170b73d33a4c6d4b9d2eb4cbe13a51c12f87183c4fdc7cb09
font_02_sfnt_off00012807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12807 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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