Malicious PDF — malware analysis report

Static analysis result for SHA-256 797847e0b5f051a9…

MALICIOUS

PDF

67.3 KB Created: 2020-11-24 05:20:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e036a13571abfc2b0972de6b4a3c9f67 SHA-1: b7fb227a8c90688fbcfa53020838a0f9d3d990c3 SHA-256: 797847e0b5f051a90472f9beee9887415d62b5b44744b4363369297821ece730
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 0.9997

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://traffking.ru/strik?utm_term=does+thanos+kill+me PDF link annotation
    • https://zovewobaj.weebly.com/uploads/1/3/4/7/134719332/seromeduvufasew.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/4413828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391636/normal_5f93ba6ee14c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410206/normal_5fa9ea38aa354.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/temezug-pogudajuwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f8b647584705.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/ec4faff9-f0dc-4b91-8751-9de91a45e6a8/salafe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e443c217-821b-4b59-894c-16db9782ffa4/dying_light_save_file_location.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/62908013068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc4f0fe9-0cb1-4623-82ee-3516b38f5740/dusuwegolexasakoruvako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66525061-8f4b-4e6f-9232-01fe8127333d/jawbone_pairing_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/063d88b3-8f53-4a27-b12d-a8af5be3b0bf/36270545803.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 4

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_off0000cd05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD05 4892 bytes
SHA-256: bed90211efca8f3b413bbb517a648e8bf91b593338b1ca5500d431b463df1285
font_01_sfnt_off0000dd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8B 10372 bytes
SHA-256: aefeba30625d246ef9ecc3565000f8d53bb1b34435dbd2b182b9c968e9726855

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