Malicious PDF — malware analysis report

Static analysis result for SHA-256 918958cb09e44da6…

MALICIOUS

PDF

69.0 KB Created: 2020-11-18 12:41:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 71fd5ed1f42275c390bba86238cabda4 SHA-1: 2a14f6329137032723e2268c1ddc71f1968fbd3e SHA-256: 918958cb09e44da6929632c98ab203a12f0982453a7341fc81f051d6b2dc0258
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://traffnew.ru/123?utm_term=thong+bikini+swimwear+canada PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401525/normal_5f95450a7d93e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377128/normal_5f8d6179386e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372358/normal_5f9652e6e77fe.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/bazarerin-surilugajexu-jusibut-jopaxig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449603/normal_5fb44c48c4aca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5f9a806fc07a2.pdfIn PDF document text
    • https://xejibojap.weebly.com/uploads/1/3/4/3/134310503/winamavutezakuvup.pdfIn PDF document text
    • https://bikojeril.weebly.com/uploads/1/3/3/9/133999271/417d85527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446286/normal_5fa8739be2373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384839/normal_5fb000cab981a.pdfIn PDF document text
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/voxexinelosiremejas.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/vonusirukete/39388082870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfd76823-bc95-4ac9-8942-9db6cbfeb376/xoxenebopidovolaz.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/saint_saens_cavatine_trombone.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/drag_v3_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46193aa7-fd38-445c-abd9-0d593f97d7cb/44760718476.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_off0000cff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF5 5564 bytes
SHA-256: da35c6a0d4ae2720399b518b4d1cd7f762bbe038cb5c9769fa06d2d9d5f13df2
font_01_sfnt_off0000e2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 10728 bytes
SHA-256: 809377a80207940aa7a58dccc0e73ee698b39ee439a485b44ebed72ea832a06d