Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f0e3b7269cb270…

MALICIOUS

PDF

73.6 KB Created: 2020-11-24 04:07:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: dda0a87e5703c3fda3d07bffc3727d22 SHA-1: 1d8814ab60cee038be3dee72953d93903d39c643 SHA-256: 56f0e3b7269cb2700cb00ce721dcaae34c7a4a9f28cdb860b0699f43ac7c6c26
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. One of the primary external links points to 'https://trafffi.ru/123?utm_term=indian+trail+high+school+band', which is suspicious. The presence of numerous links, including one to 'https://s3.amazonaws.com/wogikokuzotaxa/kanagel.pdf', suggests a coordinated effort to direct users to potentially malicious or deceptive content, aligning with phishing or SEO abuse tactics.

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=indian+trail+high+school+band PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452865/normal_5fa950905bb80.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/e7dca301.pdfIn PDF document text
    • https://wuxepufoz.weebly.com/uploads/1/3/4/3/134371519/9074033.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/wogikokuzotaxa/kanagel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06f0cfaf-2611-497c-af76-3ba8f13f4aa5/talebujojaxij.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/adverb_clause_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/fire_emblem_path_of_radiance_the_great_bridge.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/java_8_documentation.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/cheval_surge_gta_5_real_life.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/maxogome.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/bmr_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/613decef-6ff1-420d-8cf1-718ffed1aed0/72127590069.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/ffa_colors_and_meanings.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/aspire_speeder_200w_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/controlling_variable_method.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_off0000e073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE073 5276 bytes
SHA-256: be60cea9d7f6300eb21b613bf5d52e0e18c6d39885caf10afa13c74c72efb81b
font_01_sfnt_off0000f253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF253 11184 bytes
SHA-256: 3cadced9e104f573c196919a312bbe2bc4f9b4a78029981b1612b0f4447f6f4b

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