Malicious PDF — malware analysis report

Static analysis result for SHA-256 4930f8da72b449ab…

MALICIOUS

PDF

67.6 KB Created: 2020-12-15 17:32:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8fd8339bdd80705307014b491dc182e4 SHA-1: b66248d730b69defdf1d5d67d3c55e26dc471561 SHA-256: 4930f8da72b449abd67351e8a60f9555bb4879c44059ab9ff47ab29d3e692480
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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://gettraff.ru/aws?utm_term=bal+ganesh+3+movie'. The ML classifier also flagged this PDF with a high probability of being malicious. While no scripts were extracted, the presence of a malicious redirector strongly suggests an attempt to lure the user to a compromised site, aligning with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/aws?utm_term=bal+ganesh+3+movie In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc587d711f6a41984a50d48/t/5fc8f36008360e1c215f6ead/1607005024704/dop_draw_one_part_level_92.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3092953a-884b-4312-9669-dadb877ca7a4/laxmi_prasad_devkota_poems_in_english.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc168c927a199023ab8f22b/t/5fc6204208845d09245c1640/1606819906882/vokoki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51c99c6d96458363d5195/t/5fcd6ffce43f2b00a8bd2220/1607299079124/ninek.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56b955e8e827d42ac3693/t/5fd08229ab2d482295e041cb/1607500330924/ticket_to_ride_europe_optimal_strategy.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/rebetado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5545486a-9de5-4c19-937a-542961bf1d0e/nespresso_aeroccino_3_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/bajrangi_bhaijaan_songs_starmusiq.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/kesunamakazago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f22a526-500c-4ab7-abdf-d3cc51e91687/dejavazobipumam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/538805f9-eb04-4de3-906c-f82771dacbe0/the_professional_baristas_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/17407421201.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/ruxovipokak.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcee5d9d104e5f152c651a/1606217309306/92912652119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cd6859d-25d2-4d6b-9065-c473e27aee60/logos_level_6.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/8155143844.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB745 5276 bytes
SHA-256: 225f8e8c59b399c0ea8b54b9dce7ec46830b517f50012e1c5600666ae7fc4015
font_01_sfnt_off0000c91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC91D 10240 bytes
SHA-256: 3ecc04089bec88ce7a70df54206debdcf3606f9cd425f11f9d5dc47c6ac2fe16
font_02_sfnt_off0000ec3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3D 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1

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