Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6bf53574f214744…

MALICIOUS

PDF

75.3 KB Created: 2021-06-06 04:21:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 877b1c0c13d790f89e070dee92d8277d SHA-1: 91120911a89f68b643e6ef7cfd546c44071e4f61 SHA-256: e6bf53574f214744e807c20475239cdd12396857c3a098b964be3cff84897ebc
134 Risk Score

Malware Insights

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

The PDF contains multiple external links, with one specifically mentioning 'real instagram followers app 2021' as a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://huntic.ru/pbw?utm_term=real+instagram+followers+app+2021 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388422/normal_5fd118868e1c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_60bbe6ec9f83e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497359/normal_6023f03a2eaf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445321/normal_60b8d5590d544.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376611/normal_5fffa9d1dc0a0.pdfIn PDF document text
    • https://rapironid.weebly.com/uploads/1/3/1/3/131398378/313d5b9614ec6f.pdfIn PDF document text
    • https://goromezamoko.weebly.com/uploads/1/3/4/7/134753948/rolipiwidedadogari.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_602d8f2111688.pdfIn PDF document text
    • https://fipuwetula.weebly.com/uploads/1/3/3/9/133997959/3541128.pdfIn PDF document text
    • https://pugixodazujok.weebly.com/uploads/1/3/2/7/132710779/bac1161814.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378406/normal_5fd0516344199.pdfIn PDF document text
    • https://zozasegabaf.weebly.com/uploads/1/3/4/3/134354173/rowowomakadeju.pdfIn PDF document text
    • https://tijisevivojo.weebly.com/uploads/1/3/4/5/134502531/gujelog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413226/normal_6004cc9634d68.pdfIn PDF document text
    • https://mutodebubopuvom.weebly.com/uploads/1/3/4/3/134373551/5941758.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376854/normal_604aa4a167b08.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://josinibugaju.pbworks.com/w/file/fetch/144694731/8046972577.pdfIn PDF document text
    • http://nigezid.pbworks.com/w/file/fetch/144595296/how_to_get_airtel_duplicate_bill.pdfIn PDF document text
    • http://molitutolu.pbworks.com/w/file/fetch/144539967/best_gta_5_solo_money_glitch.pdfIn PDF document text
    • http://tusoxefum.pbworks.com/f/tatonemanubipodaberililu.pdfIn PDF document text
    • http://juvudibip.pbworks.com/f/nepodopuw.pdfIn PDF document text
    • http://sorawako.pbworks.com/w/file/fetch/144613236/react_redux_to_do_list_example.pdfIn PDF document text
    • http://xiwitanul.pbworks.com/w/file/fetch/144460731/75867367711.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_off0000e578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE578 5648 bytes
SHA-256: f02fc60a8ab4042c15e0f0113543de42f4db755e4c19d846ddad0c115eaf3398
font_01_sfnt_off0000f8b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B7 11304 bytes
SHA-256: ef49f322d6c62cdea0bddee5783dfa253001fb251faace277bfbb6746403331b

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