Malicious PDF — malware analysis report

Static analysis result for SHA-256 270d70e5b4d98c60…

MALICIOUS

PDF

76.9 KB Created: 2021-06-01 15:04:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a9ee9e90d18b41f9ea6a06babce2093 SHA-1: 1feca35333f979f55b62fc04e36a2ce00aaf5ebd SHA-256: 270d70e5b4d98c60567683aeea1cbbd3cf37aa8e602f7a6ad55ddb2e6f734243
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it's a phishing or trojan. The 'Fake CAPTCHA' heuristic suggests the document's primary purpose is to deceive the user into interacting with it, likely to trigger a download or execution. The embedded URL points to a suspicious domain, further supporting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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://allytemp.ru/pbw?utm_term=far+cry+apk+%252B+obb+download+for+android
    • https://static.s123-cdn-static.com/uploads/4505363/normal_5fc967730b5d5.pdf
    • https://cdn-cms.f-static.net/uploads/4374022/normal_601f24ac67ead.pdf
    • https://cdn-cms.f-static.net/uploads/4411918/normal_5fd902e38a59e.pdf
    • https://cdn-cms.f-static.net/uploads/4461202/normal_5fd9e2ddae07c.pdf
    • https://cdn-cms.f-static.net/uploads/4479710/normal_5fdab1d3e0520.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/e30ee95e-be84-4f63-8d2d-67fe6a4e1869/54742032030.pdf
    • https://uploads.strikinglycdn.com/files/b4682882-329f-485f-bbd8-51c07bb39c72/mudividilezugufazoli.pdf
    • http://xetibubib.pbworks.com/f/42503884561.pdf
    • https://uploads.strikinglycdn.com/files/f74f5058-caf2-40d1-a85f-846990db5117/1965_ford_mustang_fastback_for_sale_craigslist.pdf
    • http://banusiv.pbworks.com/f/webefexuluxanivu.pdf
    • https://uploads.strikinglycdn.com/files/aead6973-5547-4475-84ab-5e1c9fff0152/the_spectacular_now_trailer_sub_ita.pdf
    • https://uploads.strikinglycdn.com/files/766d940f-6d88-4b1b-8d29-84be53149085/duralast_900_jump_starter_manual.pdf
    • https://uploads.strikinglycdn.com/files/79f32d4b-db0a-4b0f-8372-d22e5dc583c0/74810328603.pdf
    • http://jobojifitin.pbworks.com/f/rental_agreement_format_in_tamil_nadu_download.pdf
    • https://uploads.strikinglycdn.com/files/d7f8ec40-d4ba-4cfe-b584-7cee73282ca5/jekuw.pdf
    • https://uploads.strikinglycdn.com/files/d17804c4-15a4-425c-9004-989230c36f2d/prepositions_of_place_worksheets_for_grade_2.pdf
    • http://xofitesu.pbworks.com/w/file/fetch/144439656/how_to_use_golf_clash_wind_chart.pdf
    • https://uploads.strikinglycdn.com/files/6294d286-447f-4062-b927-aef7b6578e6a/mini_a8_gps_tracker_review.pdf
    • http://zepadatoju.pbworks.com/f/what_is_the_best_free_anatomy_app.pdf
    • https://uploads.strikinglycdn.com/files/0535f622-bd16-46e2-8f0e-e27abd11d014/hcl_pegatron_ipm41-d3_motherboard_drivers.pdf
    • http://jesababa.pbworks.com/f/sadazokijavexivirabi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e296.bin
5b1cf34168feef4d282712b865ba1e3e307250171069bc941f4b3d00d24290e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE296 4912 bytes
font_01_sfnt_off0000f363.bin
4cf187273b7f2ec30a496c6960ade04002ffdc676345568ba07579f2b660022b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF363 10756 bytes
font_02_sfnt_off00011835.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11835 4324 bytes

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