Malicious PDF — malware analysis report

Static analysis result for SHA-256 69bd8d76928e7448…

MALICIOUS

PDF

59.6 KB Created: 2020-11-27 12:02:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 259b426f9e61db5eb011de96ceeda7c1 SHA-1: 19b67cc3438f1df7b3c5b2dcbacd0e65bc38232b SHA-256: 69bd8d76928e74480e63696d82b45ace40a5f031f85a58368d17c0d83e5f1ccb
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to 'trafftec.ru', suggesting a link farm or phishing attempt disguised as game instructions. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the distribution of further malicious content via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=how+to+play+dixit+journey PDF link annotation
    • https://padavosasosak.weebly.com/uploads/1/3/4/6/134632247/3fea589b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/fizud.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/fresco_play_security_assessment_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/scale_pentatoniche_basso.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/folejumizolifodemevaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/735ccbf1-fa89-4015-98a6-537f2ee546af/janarexiresopabaxipiputa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e24329b-1255-43f6-a578-e5e51cc089bc/falling_creek_middle_school_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a528db9a-8d84-4314-922d-5315371a680e/24834657680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6db082a-009f-4dea-a744-41921330407b/gemowufokudojad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0425295d-d90a-4850-a457-5ba25cc72a89/8784407323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f063a1bb-5987-44a8-a6c7-7ccd3914b85e/85171447123.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/megacon_orlando_2020_cancelled.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74fb3af7-a34d-4731-8422-a82ed953f73d/59975392622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/660a5fcb-0060-4a99-b8e2-8e6a12a78a0f/602-883-2751-3032_is_true.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_off0000af1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF1E 5072 bytes
SHA-256: c11751e92f956ba902e912d3444ea1e1ee54cb0e5823ddfe9698761aad895426
font_01_sfnt_off0000c089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC089 9776 bytes
SHA-256: 999a50451be593d6578a889fa2782cab5083e6d29322d6f78aa13f2f70052f75

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