Malicious PDF — malware analysis report

Static analysis result for SHA-256 3382472ad7184f39…

MALICIOUS

PDF

73.5 KB Created: 2020-12-03 13:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: eeeaad952547d59930df727a85197fe5 SHA-1: 16cce26132c3a82e965cfaa755ab9ee2c4b4a499 SHA-256: 3382472ad7184f396694d20619b168467690c00a62384a915f549bf136a9614b
156 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a link farm, with one of the external URIs pointing to 'trafffi.ru'. ClamAV also detected it as 'Pdf.Phishing.Trojan'. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest an attempt to redirect users to potentially malicious websites, possibly for phishing or to distribute further malware.

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 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=so+i%2527m+a+spider+so+what+light+novel PDF link annotation
    • https://badoguwogodunej.weebly.com/uploads/1/3/4/7/134713378/pitili-fujagigeju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427105/normal_5fa6f4ea5d49d.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/gezetega/chander_pahar_bengali_full_movie_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e0febe9b6939510aa6a3/t/5fc13efbf81c9a2a0ccf9d14/1606500091319/41189036159.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/xidulularulotupisem.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe21dbe18c5c478ec4a9d0/1606296028385/smiling_hill_farm_goat_yoga.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/micromax_android_one_battery.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2d06c1452f90b7ff1a516/t/5fc58d9ebc819f1cf496c1fd/1606782367135/budor.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a81ee5c7695ca9a6fa19/t/5fc506d708845d0924285692/1606747865514/jitujoraxonu.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/electronic_devices_and_circuits_by_jb_gupta_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfd8ddae50a014587710b/1606221198942/voremodedifonisus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50bbc92c50b1a1e921daa/t/5fc5bebc18e72e5fdb9e83b2/1606794942067/personajes_de_asterix_en_hispania.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57497bd14ff0dd2bb5313/t/5fc7e91ee3db732bc6c707d4/1606936862815/balanumovelalotuxu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE85 9392 bytes
SHA-256: 980402850a84a41a8d8ad47735f671f7986d36aadfe2dcb208b5a317776bb09f
font_01_sfnt_off0000de11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE11 5664 bytes
SHA-256: 3deb82f3ceb9c579acf0de70ca5b16df40ba8d3aefeaf1b5d0ab1c27aca2848c
font_02_sfnt_off0000f14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14C 11384 bytes
SHA-256: b3f9f05b93d2df3d83c703b28280324aa9cc025dbde49681ac3b00f82ab16f18

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