Malicious PDF — malware analysis report

Static analysis result for SHA-256 55b7e079d31624ce…

MALICIOUS

PDF

66.4 KB Created: 2020-11-30 03:21:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e495c82f65eeda357c0744944b4dfa0f SHA-1: 5d46446422219b1bfca59aa45f903ca3c39689be SHA-256: 55b7e079d31624ceed612cd245b308ac1232c276c3b2961c322a92f6e8f0eb5a
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafffi.ru/strik?utm_term=benchmade+gold+class+cigar+cutter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380395/normal_5fbd3f2edff2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485010/normal_5fbdb665bef72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388046/normal_5f9c914d741aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425005/normal_5fc14ce6d66a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381997/normal_5fb9602745700.pdfIn PDF document text
    • https://bazojarazete.weebly.com/uploads/1/3/4/6/134650598/jifever.pdfIn PDF document text
    • https://mupaxezofede.weebly.com/uploads/1/3/4/3/134317166/4422845.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tetazino/xipadure.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/ferret_rescue_martinsville_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6fcb592-e52f-4ad8-9281-eba1d250f4ff/baby_sitters_2.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/crossed_ally_condie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/41977636015.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/read_between_the_lines_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB90A 5284 bytes
SHA-256: d9665eb02a080f1ae311d08a12f460a8e2bed9ad06231ddc9a20608bf65d8c6f
font_01_sfnt_off0000cac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC6 10652 bytes
SHA-256: b92b139760b8ff9650d07c91021768b87ad092e772c0f12a1a741741bc38e09e
font_02_sfnt_off0000ef08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF08 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3