Malicious PDF — malware analysis report

Static analysis result for SHA-256 06bf3c93296413f9…

MALICIOUS

PDF

76.3 KB Created: 2021-04-02 12:02:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f26241688752c570130c8090a018f43c SHA-1: 13dfb182fa321d106369777e94f6cba5740836cb SHA-256: 06bf3c93296413f904701391a3f02e32c177cbb8eb46375ad6caee17929d0316
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a high concentration on disposable hosting, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of external URIs and the nature of the embedded content point towards an attempt to redirect the user to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8924

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/award?keyword=gloomhaven+solo+scenario+item+cards+pdf
    • http://pofuxubilet.sportsontheweb.net/inspiring_quotes_about_life.pdf
    • http://gekifek.scienceontheweb.net/painting_kitchen_cabinets_before_and_after_photos.pdf
    • http://serarudipiwuvon.mypressonline.com/alkanes_alkenes_alkynes.pdf
    • http://dorugatutaxovi.scienceontheweb.net/sugekan.pdf
    • https://cdn-cms.f-static.net/uploads/4366676/normal_603a788330be4.pdf
    • https://mesedegusi.weebly.com/uploads/1/3/4/6/134600151/1046243.pdf
    • https://cdn.sqhk.co/bilanogakiw/KrggZl8/12575407653.pdf
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/binukapuzebilorijel.pdf
    • http://jadogaxarabu.mygamesonline.org/ralabobeliz.pdf
    • https://cdn-cms.f-static.net/uploads/4408987/normal_604f9cfb409eb.pdf
    • https://cdn.sqhk.co/vizejagojib/jec7gfp/defense_zone_3_ultra_hd_mod_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/salade/algebra_2_regents_answers.pdf
    • https://s3.amazonaws.com/fejenijovekozu/segokefe.pdf
    • http://dupepoge.onlinewebshop.net/anti_inflammatory_activity_of_medicinal_plants.pdf
    • http://furafep.onlinewebshop.net/how_to_convert_file_to_word_doc_for_free.pdf
    • https://s3.amazonaws.com/vavale/25741592580.pdf
    • http://gevejonitu.onlinewebshop.net/28604228375.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106c7.bin
20ad6f49667e49988f978fa4c58cf7995abc4038280f848c38e8c67a0c5e5500		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106C7 5484 bytes

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