Malicious PDF — malware analysis report

Static analysis result for SHA-256 311a6dcca4e0035d…

MALICIOUS

PDF

72.3 KB Created: 2021-02-14 17:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 518bf1f20753255c285fd8d2cc37b0cc SHA-1: fc3425da444519b11a6b2b322e9e074f632b0c20 SHA-256: 311a6dcca4e0035dfd614abc651d42b2935f8047692ec258df472e1102a6c518
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://leonvi.ru/wix?keyword=tomb+raider+2+strategy+guide PDF link annotation
    • http://sdfsdfsdf.shaketorch.com/63303879024.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/pEjahiu/call_of_minitm_zombies_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475397/normal_5ff4683061592.pdfIn PDF document text
    • https://cdn.sqhk.co/luginuwi/gcjbjjL/24752568952.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/hijrwhi/craftsy_patterns_knitting.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/AohiD84/last_minute_hotel_deals_near_me_tonight.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451047/normal_5ff6748417eed.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/bjbVic0/war_movie_music_ringtone_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wimedizi/eQgfjje/bomb_transport_3d_apk.pdfIn PDF document text
    • http://zelupelar.iblogger.org/ad_hoc_financial_reports_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/wirubetena/hhh5ifA/cyclebar_midtown_schedule.pdfIn PDF document text
    • https://dajidavibaral.weebly.com/uploads/1/3/4/6/134606929/6925418.pdfIn PDF document text
    • https://cdn.sqhk.co/javijaxim/d0gejg1/39893002445.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://noxebujo.epizy.com/sigotamasi.pdfIn PDF document text
    • http://zawuzujuw.epizy.com/vigimififabaweti.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/sanabobozib.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/fafukugaxugukerapeworiko.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/saniwewizuzukikisid.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/bibivozan.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_off0000de7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7D 5436 bytes
SHA-256: 68f2eeade3898f83f48e6c210bbca9827b6f5f37a9c3c096b072ddc2e06ad06e
font_01_sfnt_off0000f0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E1 10508 bytes
SHA-256: 500ecd6099ace10f2fcdb4e660e8357e71c754d3352780900a46647df76912f6

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