Malicious PDF — malware analysis report

Static analysis result for SHA-256 061e987a6b46e37d…

MALICIOUS

PDF

63.7 KB Created: 2021-02-15 18:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 55d64efb4deeaf2f73c28840d01defcb SHA-1: 8325e406ab828716dd06cd55f61812f4f6733ddf SHA-256: 061e987a6b46e37d5a4294c59c7d3fd808752f60333b1586c3771ec289a35ba0
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=star+trek+2009+online+free In PDF document text
    • http://reduslimitalia-official.website/veriguxizorajawere8wpmu.pdfIn PDF document text
    • http://oneplusonemain.xyz/canada_food_guide_recommended_protein_intake9trwc.pdfIn PDF document text
    • https://danifiwap.weebly.com/uploads/1/3/4/5/134585556/menexowufij-xubevesepo-dogokoxewe-kigozele.pdfIn PDF document text
    • https://runuxufugax.weebly.com/uploads/1/3/0/9/130969308/bepopep.pdfIn PDF document text
    • http://fdvsefwfrw.space/stacked_bar_chart_ggplot2cpphc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446272/normal_5fcbdb7116f1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379240/normal_5fdbbc71b36bd.pdfIn PDF document text
    • https://jesefunif.weebly.com/uploads/1/3/5/3/135393529/zapaminefizan-pedozutekaputu.pdfIn PDF document text
    • https://zalivibutadugaf.weebly.com/uploads/1/3/5/3/135391941/fufatar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405950/normal_601926f14bb19.pdfIn PDF document text
    • http://x-bionic.shop/jardcs_paper_templateoueme.pdfIn PDF document text
    • https://zesaxigupube.weebly.com/uploads/1/3/4/0/134016892/80cf919e5e36.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/bleach_opening_13_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/ladof.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_off0000bacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBACD 5180 bytes
SHA-256: 21560be2e7227f29683804e8b369a740b6de1bcfe17658dae12dcd7a012fae7e
font_01_sfnt_off0000cc7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7A 10660 bytes
SHA-256: a23fce8c86fa5ebd45b783024b3a585b4a0ed76ccb6a9c193c20c79a30e6bcb5

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