Malicious PDF — malware analysis report

Static analysis result for SHA-256 73dc255d39f17013…

MALICIOUS

PDF

63.4 KB Created: 2020-12-05 03:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 41455d9d08b63350363c3eb43eec2dea SHA-1: 9d66c130694734ca6d2b62fcbc7803e4190b5b7e SHA-256: 73dc255d39f170133a0c1bb51facb5a8008a98f5c545655ed7ebcb66946cd01c
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 0.9995

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://traffine.ru/strik?utm_term=national+honor+society+pin PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377388/normal_5faba6b3ae373.pdfIn PDF document text
    • https://xurigaguk.weebly.com/uploads/1/3/4/6/134635426/puvixezoziwebuj-gegelerejipa-tuvabivegurina-visalipodes.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://static1.squarespace.com/static/5fc79be1d743eb43444a2f45/t/5fcaca6f82a40501dfe8dfe6/1607125615799/regal_cinemas_14_showtimes_santa_maria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d7b7d6d-14fa-4658-a862-56eae45f5649/namoxotaxuzag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c44236-4e87-4e86-b211-c7f9db0d9828/73515466425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac8ee647-760c-4782-ba44-466a089f8e83/ms-7596_bios_update.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1015360f2895dc1e86a3c/t/5fc12e67fa04221c714a4cc3/1606495848086/samurai_class_guide_rotmg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a183a35-0eed-427e-984b-4312647ef406/45427014513.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b5908b9e860b7b22bd08/t/5fc8f7ff0034506390a744a4/1607006207325/cute_halloween_costumes_for_teenage_girl_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2b56705-1886-485a-916e-e0f719059055/rokosebiron.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_off0000aed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAED0 4880 bytes
SHA-256: a0c5c6e505d17c1988b212b1794aed74e71bfbc1ce75dbf29e92639d6c2bf9d2
font_01_sfnt_off0000bf56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF56 9996 bytes
SHA-256: fe2804361f7baaea16d107cb73983a9c20c20c51536862b6b1b4bbb43315dada
font_02_sfnt_off0000e18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f