Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ac0f1a0e7c2016…

MALICIOUS

PDF

78.8 KB Created: 2021-03-13 16:48:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ff4b1e9839f912e88936c594e83e9984 SHA-1: 94cb8d2c0b77b567c75d43e6632eb127e0a5fdaa SHA-256: 96ac0f1a0e7c20165adda350fb02d38c690b1b0caf1b8dffd8507ddfe83bcf29
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/wix?keyword=evony+troops+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501645/normal_5fd5f5346a324.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501356/normal_60002113458ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389816/normal_6041e449d6b9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411923/normal_600c1aa30c832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408709/normal_5fc5aadc92e3d.pdfIn PDF document text
    • https://debeseroduk.weebly.com/uploads/1/3/4/4/134467522/5223859.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479902/normal_5ff599592bd5b.pdfIn PDF document text
    • https://kokazokurazafan.weebly.com/uploads/1/3/5/3/135348127/zefexosujex-filexejiwuw-vimus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423750/normal_5fd67da30b87b.pdfIn PDF document text
    • https://xavuzilutose.weebly.com/uploads/1/3/1/0/131070872/e7ec23d3bc42d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://putotapuzavip.rf.gd/cfg_to_chomsky_normal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/20219796130.pdfIn PDF document text
    • http://ferumodos.epizy.com/john_paul_jackson_dreams_and_mysteries_youtube.pdfIn PDF document text
    • http://dalotidel.epizy.com/principle_of_mathematical_induction_proof.pdfIn PDF document text
    • http://mowesedapi.epizy.com/kefotegilesusoxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/247eace1-5180-4f7b-9f87-f251fffc0d99/how_to_program_legacy_850_garage_door_opener.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82eb9bcb-a9f4-4d4d-93ed-1fb5e7d92d9f/dell_inspiron_6400_drivers_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f4463fb-5fc7-43fc-b3c6-61eb0cff2e46/warcraft_2_movie_download_in_hindi_720p_khatrimaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aae8390e-beaa-45a6-bc26-7db02bbc36ac/software_testing_course_with_100_placement_in_pune.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/fire_retardant_plastic_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/kmo_and_bartlett_s_test_spss.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_off0000f83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83B 5004 bytes
SHA-256: 39dd0ede78c8b20e42d6b79cde5dc5cb09e50bb4b56055af25edb4450fcaf577
font_01_sfnt_off00010962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10962 10348 bytes
SHA-256: 31fe2e9a62c3355a77b9bf30e17e8a52c83014c30b52c746dcad9af3dad11fda

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