Malicious PDF — malware analysis report

Static analysis result for SHA-256 0607352101305031…

MALICIOUS

PDF

75.3 KB Created: 2020-12-16 20:09:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f2f730b5f0a41602814859513c9f6021 SHA-1: 73dd051e85d962a8f5af24c128059a0e1b9ee373 SHA-256: 0607352101305031d06dbdf0ede8ca99a4f9551dba444228db65a3e911c6cc5c
96 Risk Score

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 a suspicious domain, likely intended to trick the user into downloading further malware. The document body, though heavily obfuscated, appears to be a lure related to a 'rulebook'.

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://trafficel.ru/123?utm_term=mage+the+ascension+rulebook+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500674/normal_5fb8ebfcd556d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403118/normal_5fc87a5602267.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/171b8850-030d-404f-91fc-6d5085054981/arijit_singh_rabindra_sangeet_mp3_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0e37f4f-5dcc-4b7f-8ce3-8621ebf22d66/ang_probinsyano_dec_18_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03499227-aa6f-4f36-b3c9-fbcea4481c33/pcsx2_android_apk_descargar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e7ad6609fd0ee79153f2/t/5fc8cbbfe101942bf7792a6f/1606994879893/41141614748.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf1b2bc819f1cf49d9c42/1606283699388/domavidiluxaweno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de1cc090-83e8-4fa8-8d29-770fa849715b/janavoluvakavexukupepej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/989b3226-3869-4ce3-a251-e92f6f49e8c3/bel_canto_singing_style.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3175ae2fce462bc9a424b/t/5fc70b243ac9c763f4ce32fd/1606880037024/sky_light_beam_images.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77cbc5dd-2f92-4963-98b0-47f04ce53868/training_camp_jon_gordon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2be2b6a-1515-44a6-aee8-d57b97fd5b8c/73037331074.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e627116eb00e3c4beed8/t/5fc3790f9ee0f32b87bfe148/1606646032014/buziwav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d945d9-c7a9-4239-bfd0-9f02d7867579/board_formed_concrete_planter.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_off0000e94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94B 5628 bytes
SHA-256: 7d7eaa4dce7e7d53912eb5b7bf320453d7a984e5e1bdadaaf67eb0f90d622fc7
font_01_sfnt_off0000fc71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC71 10512 bytes
SHA-256: 8d58d0df1cf3b4b51121c7b1076eb81904cfe641e18db85f84a86b6f59c84b5f

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