Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5764921e27038f…

MALICIOUS

PDF

100.3 KB Created: 2021-05-27 23:25:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e628a65558a0a196ca619db662130455 SHA-1: b1dd67883ea58030532558b0c596cbcc5ed46291 SHA-256: 2e5764921e27038f8f09a27b0ac93762c0561f121f6b24369b33b07f873391ee
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-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.
  • 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://resalured.ru/strik?utm_term=gta+5+offline+secret+missions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369766/normal_6039afb6b8b1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379615/normal_6046f42a7511b.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/lamafodedaven_wifemedabopupin_takitetul_baxiwelekali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422148/normal_6024b8bb09464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375514/normal_603b7798ea9e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459628/normal_602e1b25d1a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_603c161b023a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5fe1786450e73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_6026da7d7ad69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378856/normal_5fcc59c65c1c6.pdfIn PDF document text
    • https://nedovewa.weebly.com/uploads/1/3/5/3/135316636/d8aed229a37316e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2e44c8e6-fc2a-44b2-b4ed-1bcb26b664cd/how_to_start_coleman_powermate_5000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0845701c-27e9-4cc0-9067-69710963f481/char_broil_infrared_bbq_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa66a792-4840-4765-8f74-4b4b89b84346/spectra_breast_pump_through_insurance_cigna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8067355-05b9-4164-9553-1113f7df755c/what_are_the_pros_and_cons_of_ai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f73f64e-79fa-49f5-931c-be4978a1d702/fepij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c18f9877-8937-46c6-8938-7479a1348049/gagegolef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f35e8f06-e990-400e-b374-104e7bb503c0/97088035405.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FFB 4972 bytes
SHA-256: a48c75a388a6e998fc438249c7f216a3b9f2d5112c0ee5465a8cd7765f2c5492
font_01_sfnt_off000150cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150CD 10912 bytes
SHA-256: 2beab096226123240b76fd5d0b8375bc60a7617b7582320d4aefd565dad74f13
font_02_sfnt_off000175e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175E5 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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