Malicious PDF — malware analysis report

Static analysis result for SHA-256 92cc83aad5905419…

MALICIOUS

PDF

71.7 KB Created: 2021-06-05 05:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 798756eb70114af807964fee6e0abf39 SHA-1: 1030bee766c0ac919943c99822f502f5a5a481d8 SHA-256: 92cc83aad59054194d5a9e9e1208aded0180006fb56d015debf68edd817796ca
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://queure.ru/pbw?utm_term=fight+club+5e+import+xanathar%2527s PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385202/normal_6056ce82bbadf.pdfIn PDF document text
    • https://zimolitavok.weebly.com/uploads/1/3/1/8/131856331/8729532.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527357/normal_5ffebc2b2bd55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_602afd41eb6d0.pdfIn PDF document text
    • https://gowajepev.weebly.com/uploads/1/3/4/9/134900038/1984355.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393181/normal_605b95d83abef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490725/normal_5fc5ad8fc73bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380867/normal_5fc6c8ea720ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456377/normal_600096f62e770.pdfIn PDF document text
    • https://jumuwubugunitus.weebly.com/uploads/1/3/1/0/131070493/eab2af74c0b20b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403119/normal_60260725f3ee1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477369/normal_6004950f0bd44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462726/normal_603d8e54c1386.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462350/normal_600d78c94090c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://damopijos.pbworks.com/f/davifebogijemejis.pdfIn PDF document text
    • http://molosafokaji.pbworks.com/f/xazakuzagopes.pdfIn PDF document text
    • http://sajateves.pbworks.com/f/auto_tune_efx_3_crack_free_download.pdfIn PDF document text
    • http://zolunegoli.pbworks.com/f/abt_lise_matematik_km_sorular_2018.pdfIn PDF document text
    • http://gonumutat.pbworks.com/f/32583470354.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AA 5668 bytes
SHA-256: e43c52fe1bbcfdf0594d44225ef45a6cacff663da9b861a0bbe94de3d50029fc
font_01_sfnt_off0000ebd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD6 10904 bytes
SHA-256: f38d5b43f5069a7ecc7170270855a343b6d1e2ecdb648e9312b34d9f551f8c7c

Open this report in the interactive analyzer, or submit your own file for analysis.