Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c2d8941f37acef…

MALICIOUS

PDF

67.2 KB Created: 2020-12-21 18:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91369d54601857e754893f753140af7a SHA-1: ddbcc8aab01cf7be6056692de13d4c0e813ecc22 SHA-256: f7c2d8941f37acefe1ccdb6a0713e9c5ee6eb22c28d03846b793323bc66f91b2
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The file is identified as malicious by multiple heuristics and a machine learning classifier. The document body and heuristics indicate an advance-fee scam lure, specifically mentioning a game download. The embedded URL `https://trafftec.ru/strik?utm_term=offroad+jeep+driving+game+download+apk` is likely the malicious payload delivery mechanism. No scripts were extracted, but the PDF structure and external URI suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/strik?utm_term=offroad+jeep+driving+game+download+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c5d460f6-721e-4734-bbbc-ca915fe7166a/kohler_cv490s_manual.pdf
    • https://uploads.strikinglycdn.com/files/2a590b64-427a-432d-9e14-325f72f6ffaa/wujetiguwivo.pdf
    • https://uploads.strikinglycdn.com/files/799c9e0e-01f4-436b-9ad4-f170ed522f8b/schwinn_foot_pump_instructions.pdf
    • https://uploads.strikinglycdn.com/files/8884d2c7-cc82-4662-ab2f-13c36b5cf927/86855925011.pdf
    • https://uploads.strikinglycdn.com/files/7bfd37b0-97a4-4996-ae63-87d61514339d/software_testing_for_beginners.pdf
    • https://uploads.strikinglycdn.com/files/5cd4b1e0-7a50-4529-80b7-4cb56deffb04/99832907135.pdf
    • https://uploads.strikinglycdn.com/files/660a1915-8556-4060-a5d0-9ac0b4a412ee/6217519136.pdf
    • https://uploads.strikinglycdn.com/files/56e81489-8cc1-43e8-9c27-45f3c2189f90/trigonometria_ejercicios_resueltos.pdf
    • https://uploads.strikinglycdn.com/files/a043eb68-b523-4ed3-b6a0-e550c250faf0/harris_middle_school_nc.pdf
    • https://uploads.strikinglycdn.com/files/9781bfef-ff6a-405e-97c6-80396d663856/28340464824.pdf
    • https://uploads.strikinglycdn.com/files/42460ad9-4bb7-416b-a56b-258f02e571e9/we_believe_in_god_the_father_almighty.pdf
    • https://uploads.strikinglycdn.com/files/648a854d-7231-4ebe-8767-10bc765fc4af/xabug.pdf
    • https://s3.amazonaws.com/wemazun/aashiqui_2_movie_song_djyoungster.pdf
    • https://s3.amazonaws.com/zamemigojat/live_tv_channels_free_for_pc.pdf
    • https://uploads.strikinglycdn.com/files/e6f48791-9341-4bd7-951e-b047b702f51e/tutorial_lengkap_corel_draw_x4.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c92a.bin
a3f7f169e46dcb28a78f69116b4c241a159704919ad52eed08eb3354a6678c44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC92A 5504 bytes
font_01_sfnt_off0000dbee.bin
6cdb2f3bede5b1aca028260f90839670efc93d3090ead1dda534a6597fd9d7f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEE 10444 bytes

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