Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe57593990d6d4ad…

MALICIOUS

PDF

69.9 KB Created: 2021-02-18 07:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0cef9133ce7e1562ba6dda2c29ec15b1 SHA-1: b3432bf039df4eb051e2cab678d8982094e869a7 SHA-256: fe57593990d6d4ad58650e560e3d18207275c48cd13149eb3b5dbc6ea6a263a5
186 Risk Score

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://jottigo.ru/wix?keyword=section+11.4+meiosis+worksheet+answer+key PDF link annotation
    • https://xoxatujetila.weebly.com/uploads/1/3/0/7/130775098/fa3f9c2.pdfIn PDF document text
    • https://nawajutexi.weebly.com/uploads/1/3/4/1/134108687/dinaloviruludugirulu.pdfIn PDF document text
    • http://opros.xyz/singer_237_bobbin8crx2.pdfIn PDF document text
    • https://raxagipob.weebly.com/uploads/1/3/4/8/134883443/1968288.pdfIn PDF document text
    • https://vugifalufaduzo.weebly.com/uploads/1/3/4/8/134889855/6dd4342e138b.pdfIn PDF document text
    • https://ninofupefuf.weebly.com/uploads/1/3/1/8/131856131/612143.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494677/normal_5ff9d98e787a5.pdfIn PDF document text
    • https://losebevaxefot.weebly.com/uploads/1/3/5/3/135347065/mudixuniz_widonudekudimop_pinavux_nazuzimodiv.pdfIn PDF document text
    • https://gegaminowudajun.weebly.com/uploads/1/3/4/0/134041134/warinuwon_gelub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467030/normal_60268b25dab45.pdfIn PDF document text
    • https://tojewenegekov.weebly.com/uploads/1/3/4/5/134502344/rezobur-zilusapusi-vibireso-mufirud.pdfIn PDF document text
    • https://nutuvujupakumap.weebly.com/uploads/1/3/2/7/132740288/64deca3805d.pdfIn PDF document text
    • https://gokuxevi.weebly.com/uploads/1/3/4/0/134017514/1e09e8.pdfIn PDF document text
    • http://zuraribofib.22web.org/baba_is_you_free_mac.pdfIn PDF document text
    • http://nout-prokat.website/sociologie_politique_philippe_braudlxaj9.pdfIn PDF document text
    • https://jimuvidagonolab.weebly.com/uploads/1/3/1/6/131636746/71ef99a3b33c668.pdfIn PDF document text
    • https://dubibezu.weebly.com/uploads/1/3/1/4/131453247/718b99a6.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://mawarine.epizy.com/44121367500.pdfIn PDF document text
    • http://devisufuxuvit.epizy.com/campbellsville_university_cpt_application_form.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_off0000c7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EC 5328 bytes
SHA-256: 54e9fa6031dd61dabdbe50c9b71e1f4b8e404217ca4c90f5452bd2c3642ce889
font_01_sfnt_off0000d9f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F2 10048 bytes
SHA-256: 5bc97d14ddae034021c37740d1995fa9c6c038c754e9f62d8c0648790a59eaad
font_02_sfnt_off0000fc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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