Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be76951320e33d8…

MALICIOUS

PDF

67.7 KB Created: 2020-12-27 22:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c8b425a15e7d59f74a59f6e49a615ad5 SHA-1: 9af771f65cd0df885b67abb6bdf5bfd7ef2eb712 SHA-256: 9be76951320e33d8e5d1fd5f16469be2b1acb210af8440ef902095cfeabc5537
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain keywords related to the URL, suggesting a phishing lure for goods. No scripts were extracted, but the presence of an external URI is a primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffset.ru/strik?utm_term=stackable+washer+and+dryer+used+denver PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467589/normal_5fbe0125f32d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375907/normal_5fe47e3fb4d08.pdfIn PDF document text
    • https://luvepuxoworusoj.weebly.com/uploads/1/3/4/6/134660421/kodinukiwekijobafis.pdfIn PDF document text
    • https://labivuzixifazer.weebly.com/uploads/1/3/4/3/134310915/vufum.pdfIn PDF document text
    • https://cdn.sqhk.co/visunexabore/ojhJEzk/ball-_hop_bowling_the_original_alley_roller_rink.pdfIn PDF document text
    • https://cdn.sqhk.co/makubeku/VfwwhaJ/nomodanerusupizo.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/4db1c963-3a85-4c12-9ffb-7430e05931a8/kezebonom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d9dc0e5-af1b-49dd-9349-0e7666bbe8f4/wakor.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/ranofenerire.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/abhimaan_1973_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/cath_lab_procedures_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f43f64e-8deb-4c21-b9ae-0313d1ac42a1/93609390891.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_off0000caf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF9 5588 bytes
SHA-256: f306777d5076f4b2a17f9ccf719518d9b971a42e9f544158cca843849e3cd41c
font_01_sfnt_off0000de15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE15 10660 bytes
SHA-256: 1f4d32ec3d04232b5045462edc8f9bd80a39cfd050110ee0c14018380c55047f