Malicious PDF — malware analysis report

Static analysis result for SHA-256 5df916d6d914fed6…

MALICIOUS

PDF

74.6 KB Created: 2021-01-17 22:59:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: cd1926b5ee4b9839f8820d7204eaee55 SHA-1: b94c439241d3a760a5433b24b4b752cdf778d0ad SHA-256: 5df916d6d914fed65a10ed31d2ec2f8c074a4dab08c0d0c0f8e4bb40c8c0617a
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating an external URI and is flagged as malicious by ML classifiers and ClamAV. The embedded URL, disguised as Super Bowl rules, likely leads to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and external URL suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/123?utm_term=super+bowl+2020+squares+rules PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392441/normal_5fc55467436aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369313/normal_5f8b0b1823325.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489257/normal_5fe69525e3b96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387233/normal_5fe09e31a7d20.pdfIn PDF document text
    • https://cdn.sqhk.co/kugugofawaz/jdtCUhO/math_flash_cards_printable_for_kindergarten.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/IujfLoj/target_archery_bow_sights.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447914/normal_5fb5edaa644ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455669/normal_5ff69099b0417.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451374/normal_5fdeb96a26a61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444884/normal_5fcce55349406.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/jgjiaAO/lebara_australia_network_provider.pdfIn PDF document text
    • https://cdn.sqhk.co/tedogegez/ogeieCD/win_liar_s_dice_red_dead_redemption.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482218/normal_5ff78a296551f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454432/normal_5fdc6deeb12ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390383/normal_5fe50ff56e3bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448995/normal_5fa116309c65c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368748/normal_5ff5ada86642f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5fdc375f67f6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449622/normal_5fcbabe75648f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464077/normal_5fe24a5b1c493.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e5f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F0 5548 bytes
SHA-256: bd35e7d4827518c25aabf256227ccea21d9e1b9eb3b33160f429a70ec7629e2d
font_01_sfnt_off0000f8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8ED 10644 bytes
SHA-256: de390358b17084c86d1528fbe1b54841046e725c9ce097cd600bb89fadb3e557

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