Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c9fbce30eb9f0b…

MALICIOUS

PDF

63.6 KB Created: 2020-12-20 19:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 30fb434da173fcbca32d35c94bdbca31 SHA-1: eb0e0b8ebac6aa32480a4fb31902fbb32b473022 SHA-256: 60c9fbce30eb9f0b667d810cff4e753ec9c17ed320663537aa681baa002a3e04
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to 'trafffi.ru', which is likely used to host a phishing page or download a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to educational content, such as a 'Rectangular prism volume worksheet'. No scripts were extracted, but the presence of an external URI and the overall malicious verdict strongly indicate a phishing or malware delivery attempt.

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://trafffi.ru/aws?utm_term=rectangular+prism+volume+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f8f35ab50182.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483083/normal_5fce0ac864c77.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/falevi/77039983960.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b63bab79f442f228a4c9/t/5fc16da73f75b166430a40ef/1606512040254/muxus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf444173fb5383b676b9c/1606284356744/the_worst_mistake_in_the_history_of_the_human_race.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb397389-161b-4341-94bc-ea477ca9726a/rulodurisedevod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7a11ecc-baba-4229-8985-5b562499caa8/resident_evil_wiki_ethan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdeb3dd109152533654cd3c/t/5fdf47477f4e6a336731e583/1608468295826/xajuxegoninejadadipenepu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2abe011f6a41984911435/t/5fc743550623334b0c5d21ec/1606894425964/61459545836.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69234c4f-0db1-4bc9-b4bb-32c5faebfbab/33473266894.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdf41f08715ea0dc9d8eabf/t/5fdf813e8afbbc2717740cb3/1608483134932/leningrad_billy_joel_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e6ecf1a-bac3-4fc1-ad3a-35142f57be82/nutricion_clinica_y_dietoterapia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e88b8139af0376454bd0/t/5fc3ea803485235c863f1f60/1606675072384/clash_of_clans_th9_attack_strategy_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde7b11617c13787ca3ef9c/t/5fdf5eea7f4e6a33673392a3/1608474347279/hello_neighbor_mod_apk_god_mode.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51391a8793968642310f4/t/5fd741b30f11661d4c4771c3/1607942580380/46570503854.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_off0000bc4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4F 5572 bytes
SHA-256: 991d7eee91edabcbb2acdff29b263a6ab20f74b6337e89747404cc331d7d296b
font_01_sfnt_off0000cf33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF33 10096 bytes
SHA-256: fc719737350c864f5ca2897336896d2fe7f0cbb275bb14635fdac8de8fc3dd26

Open this report in the interactive analyzer, or submit your own file for analysis.