Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed48934635755f0…

MALICIOUS

PDF

71.3 KB Created: 2020-11-26 09:44:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 25d6fd6a2163ec8ba509dbe4e19d8223 SHA-1: 19439d5ec9021033c3de6db51a7822549c6cb537 SHA-256: 2ed48934635755f03289a8ed30cdbd0cb6800f0a34a39cc0a3de0ba85334a845
156 Risk Score

Malware Insights

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

The PDF contains a lure for a "Hamilton full movie for free" which redirects to a malicious URL. This URL, in turn, points to another PDF file hosted on AWS S3, identified by heuristics as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/strik?utm_term=hamilton+full+movie+for+free PDF link annotation
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/lanaxutodi.pdfIn PDF document text
    • https://kuvinonufero.weebly.com/uploads/1/3/4/3/134307364/fugogebogopi_bibifebepajow_jogalofenigoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5fad71f95fbfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368955/normal_5f88ff69a19c5.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/vesubodufisi/mamobamasikezobelidozodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5aa45e1-c3db-4b58-8f6c-06d75705604a/kuran_kerim_tecvidli_okuma_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/wukerikanatora.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/nodowiporiduzowajafudabi.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/bitibifasulexupesafife.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/ielts_general_writing_task_2_band_9.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/gulf_coast_magazine_submissions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a9c0092-e0f0-46c4-9bbd-368c95932521/old_fashioned_peanut_butter_balls_with_coconut.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_off0000d911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD911 4756 bytes
SHA-256: ae47d044f3db65bc01ad87e477179ae158294be142c034a376cf3301f7e87af4
font_01_sfnt_off0000e92f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92F 12032 bytes
SHA-256: 278cfc159539bf2c07617cc5803156018a24a9a4cb91aa6b51377df2f2aa6319

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