Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e1afbca22e1987…

MALICIOUS

PDF

87.6 KB Created: 2021-05-29 18:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a894c4fb0870f2a06cda41cc4b6b2f70 SHA-1: 26b0704963f696784579a7e6fcea90149d9ec838 SHA-256: 88e1afbca22e1987b4cbd64923fb7c65ffeb8cf0af744c5c81870fa686672bca
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Nba 2k20 xbox one digital code' and embeds a suspicious URL pointing to 'dugedepap.ru'. This URL is likely used to deliver a phishing page or download a second-stage payload. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/strik?utm_term=nba+2k20+xbox+one+digital+code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485580/normal_6036db3dd6de2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393358/normal_5fdeef4d12526.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383804/normal_5fca3df041716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478688/normal_600e9095bdebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481513/normal_60365b474497a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481285/normal_5fda06417cf08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408981/normal_600a6980bae4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461485/normal_606e1fdad8048.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495269/normal_6014906721a60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421366/normal_603e16cf2444b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411250/normal_5fd39a92e8813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379611/normal_6051b66df0687.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375351/normal_5fe3f63ab4a11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_60133e0b250ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415321/normal_603348fc92416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368250/normal_5fd61178097e7.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/55102613-fa98-462d-8f76-f59e12f93152/top_10_town_hall_11_war_base.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f1e4e3b-3048-45b3-9f56-0dd4ff505907/seretisumarupim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c9125f5-df78-432c-ae41-50d6b8ae6092/how_to_reset_an_aprilaire_thermostat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f4199a1-5e03-4653-907a-d0e9869ec8dc/dyson_cyclone_v10_animal_cordless_vacuum_-_refurbished.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c3d1620-c271-4461-b5da-f077100a0ca4/wafinelofilolepivapofeked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5542ba8b-038b-42e8-b83e-3fd5aa608828/5921495395.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_off0001098b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1098B 5348 bytes
SHA-256: aa9e9909fda13b2860fc0432e7a62352f100f9cf8c7dffc5367937943c896a0f
font_01_sfnt_off00011be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE0 16520 bytes
SHA-256: 44a1fb2667586ff02b3a0e94fc89bf9d6efaf977ded8ba1ba76cdbdab714fd27

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