Malicious PDF — malware analysis report

Static analysis result for SHA-256 8320ce7e1e79561a…

MALICIOUS

PDF

79.2 KB Created: 2021-02-28 16:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fb747c79fbc2e33b00865d24bfdbe5c SHA-1: 7174d27a4ee7a2670b22bb8809b4a45005202a6d SHA-256: 8320ce7e1e79561a476b00888d29c9979069c069ad622eb1e6c688c8969a1054
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL likely leads to a malicious site designed to exploit the user, potentially for credential harvesting or malware distribution.

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://dafemum.ru/strik?utm_term=employees+leave+rules+in+india
    • https://cdn-cms.f-static.net/uploads/4526930/normal_602883f7c4679.pdf
    • https://dakilemuvepin.weebly.com/uploads/1/3/5/9/135963620/depalalojipu-sitene-rusifow-lufexebu.pdf
    • https://filinisosiwox.weebly.com/uploads/1/3/0/8/130814007/lobekur.pdf
    • https://static.s123-cdn-static.com/uploads/4460058/normal_6009164e7a85f.pdf
    • https://cdn-cms.f-static.net/uploads/4490122/normal_6035a15bcec27.pdf
    • http://tawokurabugo.22web.org/85972038139.pdf
    • http://bubiver.iblogger.org/82836884205.pdf
    • https://static.s123-cdn-static.com/uploads/4448986/normal_5fe0ebc8552b5.pdf
    • https://niromovikusuzu.weebly.com/uploads/1/3/4/6/134651616/lubulunedosod_fasur_rukiwotogodex.pdf
    • https://bivufinemena.weebly.com/uploads/1/3/1/3/131380184/xawoxevapizuvup.pdf
    • http://pilevisuzo.iblogger.org/nuredawurimepikizof.pdf
    • https://cdn-cms.f-static.net/uploads/4394073/normal_602457cec6fc5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/naxozelozude/active_passive_voice_exercises_with_answers_doc.pdf
    • https://s3.amazonaws.com/woberiz/canon_mf3010_scanner_driver_32_bit.pdf
    • http://digifasofow.rf.gd/russian_genitive_case_exercises.pdf
    • https://s3.amazonaws.com/daraniwekamidir/bride_of_the_century_episode_10.pdf
    • http://tirixerunifadi.rf.gd/printable_coloring_worksheets_for_first_graders.pdf
    • http://salesog.epizy.com/tom_clancy_movies_streaming.pdf
    • http://zoguberuwanu.rf.gd/isopropanol_material_safety_data_sheet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea85.bin
5dfa788e7e8d42bdb1a46e006be1145109c4d43917126b55428309e0e3f68f73
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA85 5024 bytes
font_01_sfnt_off0000fb7f.bin
2e83ff89664c7706978aadedcb1b0601b092c63ece850df6d1ca58971a16c011
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7F 11228 bytes
font_02_sfnt_off000121bc.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x121BC 4324 bytes