Malicious PDF — malware analysis report

Static analysis result for SHA-256 777a214a2029448d…

MALICIOUS

PDF

67.6 KB Created: 2020-11-19 00:34:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7e9e48bfa02c8fefc6d3dd5abb10f7dc SHA-1: ec0b16418e0e1becbe12a14774404cf20d69ee5b SHA-256: 777a214a2029448d826d3a392a3837c64f519946c7ea719c1224a77d2866cc16
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/aws?utm_term=graphic+design+images+templates'. The document body, though heavily obfuscated, suggests a lure related to graphic design templates. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely used as a phishing or malware delivery mechanism.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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/aws?utm_term=graphic+design+images+templates In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zugutixe/blackjack_game_online_no.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa261e0-0c4f-4c24-b3ba-a744ac8aaa7c/fll_ev3_robot_building_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa6f4c0a-d93f-4224-a045-7c8b41f80fa0/97854310815.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/quien_es_el_angel_de_jehova_en_la_biblia.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/woodworking_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/018fb5ed-98c4-42a2-8aa9-d86d9814e2c4/dont_give_up_peter_gabriel.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/wezegov.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/annamayya_songs_free_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/suzuki_vinson_500_owners_manual_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/41985968104.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/el_autoestima_libros.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_off0000cb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0A 5520 bytes
SHA-256: 5e19d388cebb2a3a11d02b5cab4e0ab486df86a3618e2d3fbbe613084580d49c
font_01_sfnt_off0000dda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA0 10600 bytes
SHA-256: 805eb13a39f49fc7f20e8022f8cb89153cfaa1de2a2101ecffb5d70116f0bfc5

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