Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1e6a18e58c00e61…

MALICIOUS

PDF

112.0 KB Created: 2020-12-08 19:04:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a40338f7316adeac8b65ede0ee275751 SHA-1: 5e422975319f768f44ca24090373ccd03c6ab4a7 SHA-256: a1e6a18e58c00e61ae1dc1059dec63a07b2d5135edc6ca41f7373dd61ebb475a
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Fun facts about michigan's upper peninsula' and embeds a URL pointing to 'trafffe.ru'. This URL is likely used to redirect the user to a malicious site, consistent with a phishing attack. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://trafffe.ru/strik?utm_term=fun+facts+about+michigan%2527s+upper+peninsula PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367308/normal_5fca166396c18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426267/normal_5fb7a312d53b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_5f9d595b8c31c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475995/normal_5fb03fb368bb2.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/donake/holley_2_barrel_efi.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/automobile_engineering_books_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d15ce9-311b-435c-b10e-1d5a58f62d56/salton_yogurt_maker_model_gm-5.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/38769881214.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc653a7cd1e280355f935b8/t/5fcda4e7260a660a6bf78549/1607312615416/destiny_s_child_album_mp3_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed17f7cf8c75402b0ccf/t/5fc35ea7fa04221c718b0b08/1606639272250/17456561949.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28ce3085bf90c0e07a8cb/t/5fcdb4d074a40730fbb740ef/1607316689538/reversibility_principle_dances_movement_in_cheerdance.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea21c30a162e0c52977d/t/5fc54a21e6d49a06bb416137/1606765090349/42331999128.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/draconic_sorcerer_guide_5e.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b3b3085bf90c0e02b495/t/5fc702545060c93fcd730594/1606877780401/tiny_little_racing_1_apk.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_off00017610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17610 5560 bytes
SHA-256: 14f0b5d87db5ed24336f29383feace9a3ac2e7ed6e6930716aa2b707b889cf13
font_01_sfnt_off000188dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188DC 12880 bytes
SHA-256: ff2816dd3922aaafc5f5a675cac2e4c705ea56b593250254fb8c445bdbbff998

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