Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c0f61f400f0ded7…

MALICIOUS

PDF

76.7 KB Created: 2021-04-06 05:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 45be6ef12eb03cb92ad9d9960876a48a SHA-1: 24fb04a6108c18c697d5875576f5266c741f8791 SHA-256: 2c0f61f400f0ded70958927b0dd3299ae9759a6c7de1fb7a7fd86234c28edd24
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs with generic filenames, suggesting a link farm or SEO spam tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing. The document body, though heavily obfuscated, contains references to 'crack' and 'wkhtmltopdf', aligning with the lure of pirated software to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/award?keyword=adolix+split+merge+pdf+2.+1+crack PDF link annotation
    • https://jaluzirilunotu.weebly.com/uploads/1/3/2/6/132681851/durakazuzatu_wevumabi_wozelazupusugi.pdfIn PDF document text
    • https://zekulereloto.weebly.com/uploads/1/3/2/7/132710655/gubigitorixe.pdfIn PDF document text
    • https://cdn.sqhk.co/nitagalut/ihjenJ2/braided_hair_salon_game.pdfIn PDF document text
    • https://peketodofow.weebly.com/uploads/1/3/4/5/134589962/9137485.pdfIn PDF document text
    • http://bifozitixexidad.mygamesonline.org/urban_sociology_syllabus.pdfIn PDF document text
    • https://mofaxogarapew.weebly.com/uploads/1/3/4/7/134771612/736082.pdfIn PDF document text
    • http://gipovasota.sportsontheweb.net/behaviorismo_skinner_livro.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/66680015468.pdfIn PDF document text
    • http://tuwukadinem.mygamesonline.org/51907443969.pdfIn PDF document text
    • https://cdn.sqhk.co/livejizilul/iiojeTm/action_movies_hollywood.pdfIn PDF document text
    • https://cdn.sqhk.co/gumakulex/mjgiEic/hill_climb_racing_2_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/c0XijMz/airport_city_codes_for_cash_2020.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/desekusoxi/magento_2_create_email_template_programmatically.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/27898817145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11d341ba-93cb-4ec7-bcdc-0e04a91c84c3/computer_bookstore_singapore.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/tavugomapigozuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9f9871-40d4-48e8-ae06-b5a2756c555a/84884551660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81fa7f4b-5ed3-41e1-a45b-f5f2ec03655c/how_to_manage_your_anger_in_a_relationship.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/famakuwawolewexana.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/pallet_truck_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/avmatrix_pvs0615_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/168b0de0-c6c9-4c17-8f43-92772be7217a/ge_universal_big_button_remote_control_24965_codes.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_off0000ebdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDD 5812 bytes
SHA-256: 37851b300bee172d19f120f96c26e6aa2f30764fbedb1e52d64159accfa80b3b
font_01_sfnt_off0000ffa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA7 11420 bytes
SHA-256: 3da3064112790dc7dfce091bb4e957d537478f9f924cce4e0b0df935aaa783a7

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