Malicious PDF — malware analysis report

Static analysis result for SHA-256 1373b25da281bfa8…

MALICIOUS

PDF

67.4 KB Created: 2021-02-27 01:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 64ce98d73342de1108e11ca3531a0bd1 SHA-1: ac4d8974d2423e4c11340d98a1699bf800fb071c SHA-256: 1373b25da281bfa8bc719492bf2cacd23457652f0bcd6608a9e30bc62f87d7cd
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://golowaki.ru/wix?keyword=ego+weed+wacker+manual PDF link annotation
    • https://tadizusojad.weebly.com/uploads/1/3/2/7/132712436/gemafevikamumev.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/ijjhIgc/19758769034.pdfIn PDF document text
    • https://ronenajawewaxiw.weebly.com/uploads/1/3/4/5/134594127/554088.pdfIn PDF document text
    • http://redita.fun/ebira_newspaper_report2w9n2.pdfIn PDF document text
    • https://moninedowilex.weebly.com/uploads/1/3/1/4/131436981/feb69d94a3b0729.pdfIn PDF document text
    • https://sivisobimiji.weebly.com/uploads/1/3/4/7/134754783/3c47a.pdfIn PDF document text
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/77438d18f45a.pdfIn PDF document text
    • http://govazibibili.22web.org/kibugagowimutipigulu.pdfIn PDF document text
    • https://mefufexuwi.weebly.com/uploads/1/3/4/0/134019004/bivexogalasi-xixujidixit-podigan-vevepagota.pdfIn PDF document text
    • http://abwaab.su/melody_music_shop_hoursvymn3.pdfIn PDF document text
    • https://cdn.sqhk.co/neratimo/dpBI1gj/foguwinuralikuzenal.pdfIn PDF document text
    • https://gupobotinifetex.weebly.com/uploads/1/3/4/3/134338345/afdc54bf6f633.pdfIn PDF document text
    • https://fejaxipanegis.weebly.com/uploads/1/3/2/7/132712099/442979.pdfIn PDF document text
    • http://sdek-24.cc/700808747079tcv.pdfIn PDF document text
    • http://fastpysystem.online/109261362202hmin.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/ifNgiaB/tiny_home_builders_central_florida.pdfIn PDF document text
    • https://cdn.sqhk.co/xenekifa/hvggiam/create_marvel_comics_online_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pimokizogo.epizy.com/agro_informatics_tools.pdfIn PDF document text
    • http://wanudag.rf.gd/62811230945.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_off0000cc59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC59 5192 bytes
SHA-256: 0bdb74ec7e6d54f5d8360c8ac2bb247c3198074fd5d441b32c81ab2f13e468a6
font_01_sfnt_off0000de0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0C 10000 bytes
SHA-256: b68132b32a2bfef8b68afdcdcf1ede686553e29232ae6e73d38feba6b96547af