Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebbd67a99a4269d2…

MALICIOUS

PDF

67.3 KB Created: 2021-02-14 04:41:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 60601db35b37bb819a8ebea37abd6c6a SHA-1: e935899df1720ff5bc78dcb0a7c62badd26387a3 SHA-256: ebbd67a99a4269d2beefb851ff7be46cced9f10dbb71169b89ace4c841efd270
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=thru+thick+and+thin+poems In PDF document text
    • https://wexipemeb.weebly.com/uploads/1/3/4/8/134860193/ruvis-zidirojujabetex-bokolinupimeja-rapekimesas.pdfIn PDF document text
    • https://xapukaxefibaj.weebly.com/uploads/1/3/4/7/134772468/zusafusizomu.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/fhhhmgi/zombie_offroad_safari_mod_apk_rexdl.pdfIn PDF document text
    • http://sdfafq.info/google_account_manager_5._0_apkpurek1uv6.pdfIn PDF document text
    • https://tomutoremaduv.weebly.com/uploads/1/3/1/3/131398477/bavewuwize-fitebasowewob-nokojelir-puliludilanu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453098/normal_600705b6aa5ae.pdfIn PDF document text
    • https://zavegaligap.weebly.com/uploads/1/3/4/4/134499553/59efd.pdfIn PDF document text
    • https://jokinurelebuvet.weebly.com/uploads/1/3/1/8/131856462/vojapatuj-korujodaxitu-fupotino-fofuso.pdfIn PDF document text
    • http://dulugidi.iblogger.org/wopapubufewoli.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/hiGihty/sirulivifexemowinivise.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/bWVBrja/flat_pack_tiny_house_usa.pdfIn PDF document text
    • https://tirasuvemesamu.weebly.com/uploads/1/3/4/6/134672388/jidiwaminitusoval.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ludoxijijux.rf.gd/pikufa.pdfIn PDF document text
    • http://wumuduwowuwi.rf.gd/14700245178.pdfIn PDF document text
    • http://gazisemodab.epizy.com/emea_guidelines_for_pharmaceuticals.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_off0000cc60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC60 5292 bytes
SHA-256: 4a0ee5ccae3cc8155fbb98bacac2481fbfef5d17e4e76569c1c50b92075c351c
font_01_sfnt_off0000de37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE37 10072 bytes
SHA-256: 3faa466a36a6b1c5f3dc603566d2246d29f0964888170c37c59b90f773d96ce0

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