Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d2032dd6db444d…

MALICIOUS

PDF

71.9 KB Created: 2021-05-11 15:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 740f8fa597db0c9768c388e67c009c51 SHA-1: 82a74e62118b0cdf6d2c9011dd510b5a4d8f51b7 SHA-256: 11d2032dd6db444d0f1823515ba40cdddbaf31f0af3d56499b4b2871a64eb6c9
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 0.9998

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 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://ponafet.ru/strik?utm_term=casio+w-800h+manual+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380382/normal_5fff5fab79bdb.pdfIn PDF document text
    • http://nidewopovuwubo.mypressonline.com/water_resources_and_irrigation_engineering_notes.pdfIn PDF document text
    • http://jojazinex.mygamesonline.org/87639949393.pdfIn PDF document text
    • https://zujususo.weebly.com/uploads/1/3/4/6/134615591/sipezibuzu.pdfIn PDF document text
    • http://konsalting.info/comprehensive_agrarian_reform_program_carp_summary648oh.pdfIn PDF document text
    • http://7lessons.website/xipigavnipd0.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/hr_interview_questions_and_answers_for_senior_management_positionsrjynt.pdfIn PDF document text
    • https://jukejifoka.weebly.com/uploads/1/3/5/3/135311866/ab7cb490.pdfIn PDF document text
    • https://vatedubajepe.weebly.com/uploads/1/3/4/3/134371970/benevaxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413968/normal_602db010e4a13.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/gcP2gaj/85597043640.pdfIn PDF document text
    • https://zelopira.weebly.com/uploads/1/3/5/9/135990333/81a0844a284d24.pdfIn PDF document text
    • https://zekigoduse.weebly.com/uploads/1/3/4/3/134336209/4290247.pdfIn PDF document text
    • https://cdn.sqhk.co/vojofarakiva/hOjfzih/26569622220.pdfIn PDF document text
    • http://podeves.xyz/2568565470qxuva.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/db37838c-d681-42aa-8d8c-5b9e4e7222b8/22708883328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b422cbb-b555-46fe-bab9-c066b4853a31/zasidamatof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91276813-0b2a-4136-b9b6-9a059f80e9c5/43000050487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d893561-fb0f-46ff-99c5-f780f7811e25/rexawexi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC1 5548 bytes
SHA-256: 862da544ae1fc321ab35871fc61995ad3533bf7e91e4bebc972edb836141a537
font_01_sfnt_off0000ed92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED92 10976 bytes
SHA-256: 644a2a9d980b83a3c8d319daf878198d922cad3df3ac85e71aef3d8b28d10fea

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