Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed16da842a188d2…

MALICIOUS

PDF

88.4 KB Created: 2021-03-19 05:22:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d2097e34be7f806e12e966e3687cebbd SHA-1: bea10424629b09fcd4a2a864aa063c5592bf4276 SHA-256: eed16da842a188d26ea2305a8920318669fd9172c8b0aca4ea5fe1f810e58df1
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a URL associated with downloading an APK file, disguised as an older version of Wattpad. This is a common phishing tactic to trick users into downloading malware. The ML classifier and ClamAV detection strongly indicate malicious intent, and the embedded URL heuristic confirms the presence of a suspicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dafemum.ru/wix?keyword=download+apk+wattpad+versi+lama In PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_600bfcbc7a98b.pdfIn PDF document text
    • http://chisto-chisto52.ru/58304760545mcu0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412896/normal_5ff4616492283.pdfIn PDF document text
    • http://theandyhong.com/yamla_pagla_deewana_2_video_songjli9v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445106/normal_5fd067f7cb15b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374698/normal_603de86d3d6a3.pdfIn PDF document text
    • http://dutadone.22web.org/widowegezajanepi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_604b9fc729025.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laganomezavarof.epizy.com/gijexupose.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/jilen.pdfIn PDF document text
    • http://pibunowawoxi.epizy.com/ditevakev.pdfIn PDF document text
    • http://vutafinaragod.rf.gd/rilumavurulad.pdfIn PDF document text
    • http://fumadasiturati.epizy.com/autodwg_to_dwg_converter_registration_code.pdfIn PDF document text
    • http://zesivukawavomu.rf.gd/google_chrome_adobe_flash_player_download_failed.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/lanoluwofipopesaluwanepi.pdfIn PDF document text
    • http://sikejafomanama.epizy.com/78260036689.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/nenoxapezojumojawusubukix.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/c_programming_for_scientists_and_engineers_with_applications.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/pema_chodron_books_in_order_of_publication.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/falujojupederidate.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/whatsapp_for_windows_8_phone.pdfIn PDF document text
    • http://nijupilunijar.rf.gd/childhoods_end_movie_review.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/bomag_bw120ad_service_manual.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_off00010640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10640 5320 bytes
SHA-256: bf92ab7a44b0f645edfbd7211b977c24c1ccb1abd672b95a22f6bdb6c6f7e3f2
font_01_sfnt_off00011861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11861 10880 bytes
SHA-256: 0c52b54b3acbfe036c26113ddc77580d3c343f9997603a0bfb17acad6497e844
font_02_sfnt_off00013d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D6B 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b

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