Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1ba2e2a9772dce9…

MALICIOUS

PDF

81.3 KB Created: 2021-01-08 10:11:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 16ef4a19cd3fa1e5b0c0e1fd89b358b6 SHA-1: bca4f08b792148a9148c378394356694de588c1d SHA-256: a1ba2e2a9772dce9795ae54a93ab1bf97870065a2208c84ce0c73c1b2b90e730
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, trafftec.ru, which is flagged as potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wb?keyword=chocolate%20mousse%20frosting%20recipe%20easy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424666/normal_5fc99762c7909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375703/normal_5f9a5fa2debcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480589/normal_5fb7414e597ab.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/pivetuzadujo/35824931785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2c52003-a564-4724-8968-b33e6ef1402d/jubukinow.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/coca_cola_amatil_sustainability_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd2c7844-2cc7-4cae-850e-d2937bc34567/96479484839.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/47286337269.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/lizuxoxam.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/inbody_270_result_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c9b6224-b787-4af2-a4bb-f9061a7157c7/amazon_courtesy_credit_balance.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/kifexujexakoripamatovej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69fe2614-7512-4075-a6e7-c8bd52afdc49/money_and_cow_emoji.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/attu_movie_video_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/blackberry_z30_sta100-_2_autoloader.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BF 5436 bytes
SHA-256: 4da6a5dba0994026742b60b9575811f335e55197dad575bdd75cb145fd290a52
font_01_sfnt_off00010a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A12 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0001129f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129F 10860 bytes
SHA-256: d6b301a2af961d4865c0021b15bd5d535d2bebe48f771e1fad5c7765cf185c5f

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