Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff6568b67c0be63…

MALICIOUS

PDF

73.0 KB Created: 2020-11-24 23:31:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e32c53b1b13f45042f69f923116d9782 SHA-1: 6d456e3a9dbffa406c212dd85b9af89386d0e43b SHA-256: 5ff6568b67c0be63931b8176d41133b4a7a8ac9b2f2234ec29b2a0f1341b41e8
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=business+manager+interview+questions+and+answers+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457572/normal_5fa95a78a1036.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466413/normal_5fb48fec02e21.pdfIn PDF document text
    • https://jixobufasov.weebly.com/uploads/1/3/4/3/134324480/sofivelonapupot_vazipupijupena_zazefizexefojis_kasat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5fa64a1401be6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482629/normal_5fa805a29dd46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379987/normal_5fa4b244b163a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffd15f4a-c2ef-4cc4-a652-17a49f15a5d8/n15235_motherboard_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/56354101852.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/abcd_movie_tamil_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/25936451770.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/77888147070.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/ptk_agama_hindu.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/24690497182.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/kojiwarodaniwujupir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82c82a01-ced4-4e0f-a4f8-68f2341402a3/67776091468.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_off0000e0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CC 5656 bytes
SHA-256: e28819d541c860f2b940c7e0416a03d906fb7f09e2013b9d9ee59997650cb261
font_01_sfnt_off0000f401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF401 10140 bytes
SHA-256: a1c6edb4cb2f35e7adda2e4930a4d909b0a42e0a162a384580ff3cc0c6da130b