Malicious PDF — malware analysis report

Static analysis result for SHA-256 72f3f192c5a0c28f…

MALICIOUS

PDF

77.9 KB Created: 2020-12-29 17:58:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac7d5a6b5be3be45de912ecde4537bb1 SHA-1: 4befc2ec9c6b55393156234a26b71599d91db5cc SHA-256: 72f3f192c5a0c28f714b37edaad3f1484a1ccc5d3e4bf082e8f4b397cdfe3e47
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan characteristics. An external URI pointing to 'trafftec.ru' was extracted, suggesting a redirection to a malicious site. The document body contains garbled text, but the presence of an embedded URL and the overall verdict strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=apex+clearing+robinhood
    • https://cdn.sqhk.co/nezusoxe/agjnUhd/slot_machines_with_bonus_games.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/7e924fc4-dc99-4af8-915c-ba8a84944de2/vector_tangente_unitario.pdf
    • https://uploads.strikinglycdn.com/files/2935c11c-56e5-4301-afee-aac54fe95bdf/calla_lily_wedding_bouquets.pdf
    • https://uploads.strikinglycdn.com/files/9f86a7f0-8987-41c7-af8e-f7baf046b828/26895806834.pdf
    • https://s3.amazonaws.com/pozokimepe/civilisation_5_happiness_guide.pdf
    • https://uploads.strikinglycdn.com/files/6cd9deba-715a-4e41-9682-4a160ea3358c/mozopugule.pdf
    • https://uploads.strikinglycdn.com/files/4de4b428-d77c-4cb9-98f5-f8afe3332a92/xuvuvumonuzozixibuzazapa.pdf
    • https://uploads.strikinglycdn.com/files/d4a02479-b243-4421-b173-7039cdaf6ba6/85868839198.pdf
    • https://uploads.strikinglycdn.com/files/28029e03-ef87-4e95-bc83-f469c0662c40/similarities_between_impressionism_and_expressionism_music.pdf
    • https://s3.amazonaws.com/sojaxub/arabic_dictionary_to_english.pdf
    • https://uploads.strikinglycdn.com/files/6179e025-7871-4a66-b251-867b6abfb26b/rugisetoref.pdf
    • https://s3.amazonaws.com/pusolefosex/elearning_for_you_care_certificate_answers.pdf
    • https://uploads.strikinglycdn.com/files/423191e6-7ea2-4dc5-9950-18ae75beab50/zifijenalet.pdf
    • https://s3.amazonaws.com/mulerux/tubojesewakibifodoki.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_off0000e6a2.bin
09cc406b60544410955873bc992ebf9caaceaee2f842345bc52c38e99855338d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A2 5060 bytes
font_01_sfnt_off0000f7ba.bin
7b3234642096f77c4ea7efae13af2f875eb494f3446956ba42bee292e7a45a13
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BA 10896 bytes
font_02_sfnt_off00011d01.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11D01 4324 bytes