Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b2fa5cf4ca7fd2…

MALICIOUS

PDF

70.4 KB Created: 2021-06-14 06:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3a6ebcde73e1b418f920e00a190ac235 SHA-1: 6562c5a817d4173855823b45888cba7e4a06ce34 SHA-256: 85b2fa5cf4ca7fd260e035f1ab4af86a689c790c5ba773ad39ba47258bf24e4e
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many of which are generated for SEO purposes, indicating a link farm designed to obscure the ultimate destination. The presence of a URL related to 'master tamil movie torrent' suggests a lure to trick users into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cructi.ru/pbw?utm_term=master+tamil+movie+torrent PDF link annotation
    • https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/2474dfb8db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446017/normal_6020b9221a466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_6025468947581.pdfIn PDF document text
    • https://sawalodisixujig.weebly.com/uploads/1/3/4/4/134490012/76167af77b0f.pdfIn PDF document text
    • https://xewurilarigifu.weebly.com/uploads/1/3/4/2/134236076/nufadituzuvujo.pdfIn PDF document text
    • https://mikixobitesa.weebly.com/uploads/1/3/0/7/130776626/3e662b0.pdfIn PDF document text
    • https://xuzanuvu.weebly.com/uploads/1/3/7/5/137508084/6106251.pdfIn 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/c8803e4c-0d4a-449f-8ac1-514fd7323783/the_rime_of_the_ancient_mariner_analysis_part_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbbee745-c6d3-4d1c-b02d-2990dfa1e328/donosesisugazizibineme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13042b1d-bfdf-4806-a2ee-96d405360af1/14534647991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8507f647-35cf-45b7-a8e4-04454479734f/77701558733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d2742f-3944-46f0-8965-5ae1de5aa156/duromax_xp4850eh_dual_fuel_portable_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eead7406-a13a-4b12-9e00-6e1cbc50fdf9/coin_master_hack_android_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c9eeed-cab6-4f3d-bcee-e58e9131e523/3000_most_common_words_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e953f9ce-f528-4db8-a3ea-4020e5acfbbe/luwejerofonobisemisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49093e9a-68ff-446b-897c-b92b277195c8/shoretel_230g_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e98c6b18-0fb9-4c4b-a526-4cfcc9b5ea36/the_titans_curse_full_movie_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af9a35b8-9477-4aed-8dbc-bc6ff9f28a83/taco_bell_nutrition_info_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b373ae-5dec-4946-96eb-d24c4e3b40ab/vopolebaniv.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_off0000d85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85C 4896 bytes
SHA-256: e4197446948442d90e4c0a08e39dbc20c2e6b1fcf6efce602875d7649a089551
font_01_sfnt_off0000e8fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FB 10480 bytes
SHA-256: 96b8776564d912d0a5c0e865d7e5d68d5880740fee7cdd450e0682e963d81ae6

Open this report in the interactive analyzer, or submit your own file for analysis.