Malicious PDF — malware analysis report

Static analysis result for SHA-256 094cc8a5e52c3386…

MALICIOUS

PDF

81.0 KB Created: 2021-02-27 03:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ad9d3a565f7d527b29234a3d72402825 SHA-1: c42f0e246c7ce97516dbefd46048bae7864355d4 SHA-256: 094cc8a5e52c33866d67c7ac1b4524d3afad7c334fc74b5846c164d39bb14a8a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document contains numerous embedded URLs, with a primary lure pointing to 'https://fokemale.ru/award?keyword=verizon+fios+ipv6+nyc', suggesting a phishing attempt disguised as a search result. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to malicious sites, likely as part of a broader phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://fokemale.ru/award?keyword=verizon+fios+ipv6+nyc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496165/normal_5ffe4f708c303.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzokikili/geDibA0/trigger_finger_ice_hockey.pdfIn PDF document text
    • https://cdn.sqhk.co/luzaxatelal/geicdie/smash_burgers_nelson_menu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379473/normal_5fe44752ebc69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465149/normal_60165f1d305eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454999/normal_5fe4ff9e50fb2.pdfIn PDF document text
    • http://desokore.medianewsonline.com/que_significa_copla_de_arte_mayor.pdfIn PDF document text
    • http://larokamexi.sportsontheweb.net/sony_xbr-55x850b_remote.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387240/normal_6013321ef2ba9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445107/normal_602aeb34ac76b.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/46052791627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420028/normal_601ece37b6f0d.pdfIn PDF document text
    • https://cdn.sqhk.co/fipuwemupe/5Giaghq/wixodomovitorunitomakes.pdfIn PDF document text
    • http://lazategomid.scienceontheweb.net/whirlpool_cabrio_washer_repair_video.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374521/normal_60024c86ddcfb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kuxemozoxabonag.onlinewebshop.net/46286319852.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE899 4808 bytes
SHA-256: 9cfbcca315b94b4e148b49d64f5be15fd1ebe4ea9764f04150249f823900403d
font_01_sfnt_off0000f910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF910 15388 bytes
SHA-256: 278941690ebccb121461c9d7e331219bf6d962674210d4d89287814ee635ccc8
font_02_sfnt_off000128ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128AD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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