Malicious PDF — malware analysis report

Static analysis result for SHA-256 a04d80792299d888…

MALICIOUS

PDF

96.9 KB Created: 2021-03-22 20:44:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3e363e38e73f87f5dc45ac30d6be0c2e SHA-1: 15ed061a1a31a218b558ea58223e74bd8eb10c74 SHA-256: a04d80792299d888320c66fdde1f4068424ffa28eac2815b5dd94e0547a62e24
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/aws?utm_term=rumble+fish+movie+soundtrack PDF link annotation
    • http://kovokowem.iblogger.org/xixedapifebe.pdfIn PDF document text
    • https://cdn.sqhk.co/motakolilo/hk9HKja/17800531898.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/TLJIryo/10582761274.pdfIn PDF document text
    • http://volomowoxe.22web.org/dungeon_master_pc_game_download.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://s3.amazonaws.com/kuxegu/72213995702.pdfIn PDF document text
    • http://xaboduvipil.epizy.com/echo_srm_2100_trimmer_head_diagram.pdfIn PDF document text
    • http://wasalesex.epizy.com/sibuxebanew.pdfIn PDF document text
    • http://gefuxexo.epizy.com/13370734048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d262ce-40d8-43b9-8c85-bf6d5445e8c9/marantec_m4500e_wont_close.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98ffb9ca-7008-46eb-ac77-699fa44bbaf0/54827553684.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/sales_receipt_book_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28673eed-77ce-4fec-8722-81d3177fd29d/62043381418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52c1a58f-77f3-4bfc-bd95-67202a421143/70733057058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37a191a4-d21a-4b50-8f52-b6986a9ac8d4/simon_vs_the_homo_sapiens_agenda_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/aroma_digital_rice_cooker_manual_10_cup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae146037-cbf9-4ee1-a1e2-addca7bcbce3/2006_jeep_grand_cherokee_3.0_crd_overland_review.pdfIn PDF document text
    • http://tosotagerazopor.epizy.com/hypertensive_crisis_guidelines_aha_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18773840-4586-4930-93e7-00ef5e97ddd0/83565713245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb3bee74-591b-4de1-aa13-62a706585b0a/the_other_side_of_the_mountain_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/tisafekob.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F34 5412 bytes
SHA-256: a14ac503a4be00fabc8caccc377e75db4084ee2c0f272ae55e58725de1ef0aa7
font_01_sfnt_off00014178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14178 11528 bytes
SHA-256: 1126e764e1b621bef6a2313603f06d96f0d5eaebac4c204cf5ce0a273bdb67ee
font_02_sfnt_off000167db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167DB 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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