Malicious PDF — malware analysis report

Static analysis result for SHA-256 03eb7e460f9d3a1c…

MALICIOUS

PDF

67.9 KB Created: 2020-12-02 04:24:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b4d608f0199d7448ee33c10f40748dab SHA-1: 90b4cf6d3ceaf8ca41ef07177e188fbd19c2602c SHA-256: 03eb7e460f9d3a1cac9b3a8a14610be19769d48a8f75879645f6a0cf86827f5a
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://trafffi.ru/123?utm_term=apex+legends+system+requirements+test PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375095/normal_5f899c3de9308.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388612/normal_5fc6f3bfb1cd7.pdfIn PDF document text
    • https://supogukifululeb.weebly.com/uploads/1/3/4/3/134307834/52e5f3f030a3118.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530151/normal_5fc6c1583ff54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476952/normal_5fae0085d8c67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378161/normal_5fb70db750053.pdfIn PDF document text
    • https://dugajivesunilo.weebly.com/uploads/1/3/4/8/134866737/6872032.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/716520.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kovilowab/action_research_booklet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38a719e9-f657-4b72-8d9b-7f69e5d2e753/6093395910.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/pedutaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bcbe72d-0f87-4edb-b0b2-0a313ad641c1/section_32a_of_registration_act_1908_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c5ed023-3154-46e2-8ea0-9a7ace71747a/70107400451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6350b634-2ca9-4116-a4e3-06127a33540c/nazodirudobiwowe.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_off0000cb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0A 5356 bytes
SHA-256: 19d2aecdac467b86df951a36ff626f06451d25210df020e7de93b10642072013
font_01_sfnt_off0000dd31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD31 11072 bytes
SHA-256: 3349dd439d756a6d8c138a0fbe04379d497d03859c7f84b6483120314aac7e65

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