Malicious PDF — malware analysis report

Static analysis result for SHA-256 26657a4684db3b46…

MALICIOUS

PDF

78.5 KB Created: 2020-12-16 15:34:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2943a343f01d0ed63972a448499c92bc SHA-1: 93563f11d85dc39e483d5f6febce7f6572d8a12e SHA-256: 26657a4684db3b46be41e90604463b45e6f4256aa841cd4bb1f4ded68ca77aa7
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to 'traffking.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to game serial codes, aligning with phishing tactics.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/123?utm_term=gta+4+serial+code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370762/normal_5fa3120b63c66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_5fae17ed92016.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384819/normal_5fc948f399eb7.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://uploads.strikinglycdn.com/files/dd3b15bd-e5c8-4c86-beb5-60533a925059/darege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63683352-2405-4b09-b47a-f7f8e043e95e/64820186766.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/102.1499a_craftsman_garage_door_opener_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e70098ea-fd03-4a33-b3e6-6c547b0d12b6/lividejusazomigabup.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/schengen_visa_france_application_form_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee0b4efb-0cec-4d1f-923d-4c7a67dda0d5/pythagorean_theorem_word_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed2a149-f96c-429b-beba-fdf3b1f0627c/zajeribax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce5908b-e8af-453c-a6ab-93654b02489c/69565402179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2915c31-74a2-4c84-b5c8-a4a9b513ef5e/72595722476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc67a4da-5130-4530-b915-9275aab3aa39/96658175055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c282cb4f-0fee-4c39-986f-2bba345d1733/80518864311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e1bc569-7964-4dfa-9733-7b91b5d765da/pugeniwaxedebobuv.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD616 3484 bytes
SHA-256: f552c5bc9f92ddc089e006b6f0c0018b0771dd750cb604089e18107c31784ea0
font_01_sfnt_off0000e27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27A 4736 bytes
SHA-256: ad66201566d3cc3fb964fb9260dc5f1418825a8eb4c129259a666e62a2f2e989
font_02_sfnt_off0000f2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A9 14932 bytes
SHA-256: 70280938db58619b205b351d7667e27cbc10fac5564fcbc0fda99493d9d93977
font_03_sfnt_off00011ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC7 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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