Malicious PDF — malware analysis report

Static analysis result for SHA-256 67202669308b4d0f…

MALICIOUS

PDF

70.6 KB Created: 2020-11-11 00:42:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: dff646974b9628be2e1eda0a32bbf9d7 SHA-1: df23d8d5c81430240962042c7f0e3177742eeff3 SHA-256: 67202669308b4d0fdef91a259927ef954fa3d912219ae6eac29543f4fb44e173
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/aws?keyword=newlands+reclamation+act+def PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5f94fc4baa0e9.pdfIn PDF document text
    • https://zupusifeduligam.weebly.com/uploads/1/3/4/3/134313264/basugudevupaxu_dekigudumajas_ruruvokox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386366/normal_5fa3bde3f14d6.pdfIn PDF document text
    • https://vakigosem.weebly.com/uploads/1/3/4/4/134480352/7404165.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/65126390-8579-43d0-8e2c-97e2dc507687/rilizozipanubovox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b0349ba-a133-4bc4-9bd0-11e4c24477b4/wedefimisujizamexobis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c347a674-7417-40bb-ba83-b4c9352cfc29/xevovew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fa8563a-75d8-45bb-8fa4-feea086c4d62/social_security_card_template_fr.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/30567410787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42852538-43c8-43ee-8e73-d402ef3d5ae6/99905166603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d098d57-6549-43be-911e-d5a2499e45b7/karate_kid_izle_trke_dublaj_full_izle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa12c810-af3d-4492-83eb-104e5bd9692f/gezezo.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC36 5228 bytes
SHA-256: 18dde49363350a690cc4ef804315242f17f9236faa7fb6f88729189dba0ea204
font_01_sfnt_off0000ddff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFF 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_02_sfnt_off0000e961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE961 10540 bytes
SHA-256: 4270d9ba812ac7a727f6feb68350efccd0f33679738c9d32d936b43d89a6d4e6

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