Malicious PDF — malware analysis report

Static analysis result for SHA-256 47f3bccf0f0fb547…

MALICIOUS

PDF

69.9 KB Created: 2020-12-08 00:46:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: de6695b1a09daf949f7e7d7ea20d199c SHA-1: de9207e86d042d2164ea5071fee9c0aa297d4fa5 SHA-256: 47f3bccf0f0fb547199d854b44a64c6ed0de4a173dba8985ed7ac0eb22fb6558
156 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffset.ru/strik?utm_term=electrical+conduction+pathway+of+the+heart+diagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377115/normal_5f8ceb4bcac5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382965/normal_5f9db6e089696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389106/normal_5faeb9cf408b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5fa48639db1b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382773/normal_5fa448029dd83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370543/normal_5f917226db09b.pdfIn PDF document text
    • https://bomikuwutivibi.weebly.com/uploads/1/3/4/5/134598741/nebixufexejoro-zefupipaza-gomisi-zodarosiraboxok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f88f7dfc894a.pdfIn PDF document text
    • https://nagilozumovamag.weebly.com/uploads/1/3/4/3/134317868/6713870.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe96f689-88ce-48c6-acb2-813b18e31223/jigafetegodesubep.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5343b239b0722914d6867/t/5fc89d026652ad59ec2d4018/1606982914927/88379274780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1672040a-80ea-453f-9362-2d48da884466/padi_adventure_diver_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6719460c-102c-4131-9b49-e49596af72c5/37966569353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd93cea4-4152-4e7e-8bfd-5b05d34c005e/82658646682.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dda511f6a41984857aa8/t/5fc1c4dcf81c9a2a0ce3a364/1606534365024/who_is_responsible_for_williams_death_in_frankenstein.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2362980d-bf23-4173-a517-ba0048d39543/how_to_see_games_i_haven_download_xbox_360.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_off0000d488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD488 5544 bytes
SHA-256: 1a48156d51d1b92033ec398462e870c93f1e7600a531536b99fd71a63410f7d1
font_01_sfnt_off0000e75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75E 10236 bytes
SHA-256: 7c1a6a0749a0ba8c57293807961d8a329864806aaac8f92f16c09640e6e589ee

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