Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa63400c43ce1e26…

MALICIOUS

PDF

72.4 KB Created: 2020-11-29 09:12:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8d2055ee4fc55a82d7c64cf280653194 SHA-1: 6067e1805225b51e514f9472f4dbc7946ad8c6f7 SHA-256: aa63400c43ce1e267c8fe0c41d273acc47483e18d4c84cb1c83b177f6de91275
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://traffmen.ru/aws?utm_term=anatomie+du+corps+humain+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/aws?utm_term=anatomie+du+corps+humain+pdf In 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/e8e3ee44-6c3c-402e-a0fd-ebe7a5514bfb/vazewadunovazab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8e42a8d-34fd-4791-a088-8e5ea71bfcfc/time_square_brookfield_square.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/71446136939.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/97641555615.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/76303855595.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/ariel_sheney_yelelema_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/acids_bases_and_salts_for_class_10_cbse_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/055d3383-804a-4ccb-b2d5-da0c57644f86/kojodonikinodana.pdfIn PDF document text
    • https://s3.amazonaws.com/vasagesorajirem/fnaf_sister_location_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7bf0bcf-a9d1-4bc9-867c-fe16e7028947/kininesubawotogig.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/the_haunted_palace_poem_stanza_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7987185-f7b2-4bb5-8c6f-cfbb9e8a5dcd/kugowasopub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaf9f55a-8d73-4053-ab24-09ba84f6aae7/tajusuzagutumopux.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/ffxiv_scholar_af.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64107fd5-df08-41f1-8b95-70e3b3381ad7/78168696058.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 2

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_off0000ddd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD4 5352 bytes
SHA-256: b186f8e129a67d1fb3dfdcc2dfa44103eb10cb6a13c99d3b7e4789b9602879e8
font_01_sfnt_off0000efe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE0 11564 bytes
SHA-256: 129927748497af2c0a6ccb88de2b4a6f8983cec5e7f5de280016e5709a398cbb

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