Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0a4305ab997d99…

MALICIOUS

PDF

68.0 KB Created: 2020-11-26 04:57:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3b73963af2b65cc4c3f8c2fecc349516 SHA-1: 15df7b9b1f2adf0d4f30e6057a0cf62dd4889392 SHA-256: fb0a4305ab997d993bafe9dfe994f62fe4a61f8530dc0986583ebbb05e7461c6
156 Risk Score

Malware Insights

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

The PDF file contains a lure related to "Inuyasha episode guide season 2" and embeds a large number of external links, many of which are suspicious. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

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 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://traffset.ru/strik?utm_term=inuyasha+episode+guide+season+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411511/normal_5f9542c8b6fda.pdfIn PDF document text
    • https://vidojibirulon.weebly.com/uploads/1/3/1/0/131070792/bba0b.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/xapidajovaji/cs_lewis_reflections_on_the_psalms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6981fbcf-bcbb-4ad8-b23c-91773af8bafe/fugl_meyer_test.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/sizevikibejowigiduzuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b703674b-6b5c-48e0-ae0b-1ee05a87b214/20013451395.pdfIn PDF document text
    • https://s3.amazonaws.com/muguroviv/lurugibakudikesojagodalu.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/korean_hoobae_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e8f0b7b-d394-4319-adac-7ca1b92358f4/jixonojokopolavagigebiren.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/unblocked_movie_sites_on_google.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/dufaworukipematubamaxuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31d2b9e2-61b5-44ec-884d-4f6322e0d9d5/19026019551.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_off0000cd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD02 5264 bytes
SHA-256: 27b52dc06932111d92195e8c5cc19976f9dfdf54715d9188a4c1f6935eef0ac8
font_01_sfnt_off0000def5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF5 10656 bytes
SHA-256: 826dcf484e3c2c910259ac0125f036403a4f90c1475238a2d098f57e839655e5

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