Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf997ff4924fac94…

MALICIOUS

PDF

75.6 KB Created: 2020-12-15 09:04:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e8a2c1268db11c3e659961431625fb01 SHA-1: e0a9f7ef17bdd855cecfe8f993537d952b091fb5 SHA-256: bf997ff4924fac94c2c6dee1e0336c03cf6b3deec24b17fd0e14fdb9f7aab734
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffking.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests it is a lure, possibly related to a schedule or delivery service, to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/123?utm_term=united+limo+schedule PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411220/normal_5f930767e85ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc101f96609fd0ee791e489/t/5fc5be5f7acac6192a88fbc2/1606794847777/2507998297.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf569deaf37e3b6492d182/1606375069787/madeira_wine_sauce_taste.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01b54964-813c-4bbd-8b57-ec4291f9849f/kejamonavaj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64b5b8ef7301f8b35b94f/t/5fcc287674a40730fb89e441/1607215231533/credit_card_generator_with_money_paypal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e0c67848ba205d186e02/t/5fc62440eaf37e3b646dcba2/1606820929803/dual_universe_nda_forums.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc648b76b97992eb580286d/t/5fc6bd4ba3696915e20d1d48/1606860107418/35042108850.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc013a70a2757459bde56bb/t/5fc161fdcb3e0f57718374ec/1606509053523/rexepazumibazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/869bf15d-7b59-44c0-80f5-d58ee99e1741/book_learning_docker.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc783e939503a47f6fdd85a/t/5fc7d82e0a80c24503e0bdf2/1606932527570/cruise_clothing_glasgow_phone_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b779bd-2e2d-4b62-b108-f39e0a3c0725/the_magicians_land.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_off0000dfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA8 4744 bytes
SHA-256: 8abeab01f66c1151a2b73b788588aa4424a6fccf275412b140674e97148e8f9c
font_01_sfnt_off0000efa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA1 10592 bytes
SHA-256: 180d9e5087e2c6ea2ed0a4556009571e23e147e2872f893ebd4b4ac5833d28cd
font_02_sfnt_off000113d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D0 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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