Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e110085888404c4…

MALICIOUS

PDF

74.8 KB Created: 2020-12-31 20:42:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5d88165d924129c33c3f338752e4138a SHA-1: 227717b5436bf81d581d25f243c79cabdb8d1810 SHA-256: 0e110085888404c45fdf04294dc0e031720910f4cad250cfe3e0fa3e94127e0c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://traffine.ru/strik?utm_term=voice+of+prophecy+lessons+pdf' is identified as a malicious redirector. ClamAV also detected this file as malware, specifically 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The ML classifier output of 0.999842 further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/strik?utm_term=voice+of+prophecy+lessons+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/bitcoin_billionaire_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c2433f-aba6-4bf9-bca6-ff4656db4765/tower_fortress_best_suit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0936f1a-43bc-40d6-a317-798e73e69f94/tituwonezobuviz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13426bfe-9ca2-4394-9ba9-749d90d1606b/flight_simulator_2020_military_aircraft.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea93ee2e-9547-409b-957e-003827e5a8f3/84948842367.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/fawutotodaxipulotunepub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7105dada-1128-4815-b706-1a4417952a37/mabinogi_hot_springs.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/template_for_ghost_face.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1af4a55-0ab1-464d-8497-e0b891e6446d/26693072167.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/mivida_master_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18287088-c284-4ee1-a7bf-46300321e108/xuwovofinizutolateputa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc235145-8986-44cf-bc3b-e9b44acf89ab/mesiligibotirokotisami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/467e4232-b8d0-47a3-a709-65d701b0c7fb/noxinowigekev.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_off0000ea3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3D 5100 bytes
SHA-256: a025ae3a9ad679184284c8f8d100af71e1b855c7a0f59ba9ee197cfb3c32ef44
font_01_sfnt_off0000fba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA6 10176 bytes
SHA-256: 7591002c002f097e171138cfbf0e1588a9b63c22355753e5f77df7cc0e669b2d

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