Malicious PDF — malware analysis report

Static analysis result for SHA-256 017f2cd1f75f560e…

MALICIOUS

PDF

94.7 KB Created: 2021-03-04 05:21:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3aa3710b5dd5af1f9e22b18068178df9 SHA-1: 937357ed957e91e89ba88b50ba57d1e02621f5f3 SHA-256: 017f2cd1f75f560e9a2a6f6daea9244a0a2f03989f2b3de7ddba47ba2aedfae0
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically one pointing to 'golowaki.ru', suggests a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF_URI heuristic indicates the potential for JavaScript execution to facilitate malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://golowaki.ru/123?utm_term=philips+multigroom+3000+vs+7000
    • https://senevabitup.weebly.com/uploads/1/3/4/2/134234896/beduletumiruzunufes.pdf
    • http://sudebatuwilazet.iblogger.org/workforce_management_book.pdf
    • https://faxipanonuk.weebly.com/uploads/1/3/4/3/134352952/birezaminep.pdf
    • https://jipotawa.weebly.com/uploads/1/3/6/0/136097183/165254.pdf
    • https://cdn.sqhk.co/zuvezunotumu/FpLqjfx/felefumajafogewa.pdf
    • https://cdn.sqhk.co/momugutatok/ojiXjim/poema_dale_vida_a_tus_suenos_mario_benedetti.pdf
    • https://cdn.sqhk.co/zafupusapun/UUDbgfA/tojade.pdf
    • https://wutuzorul.weebly.com/uploads/1/3/5/9/135963099/2436385.pdf
    • http://lamiwefawiwa.iblogger.org/add_first_edition_players_handbook.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zulezov/clockworks_flyff_guide.pdf
    • http://wovovaj.rf.gd/nifiko.pdf
    • http://midelex.epizy.com/zovinobe.pdf
    • http://zusomiverufal.rf.gd/riluguranelifejixozawukam.pdf
    • https://s3.amazonaws.com/lebejos/dojofawemafobujo.pdf
    • https://s3.amazonaws.com/wewiro/chrome_apk_for_android_4._3._1.pdf
    • http://ripofosefalub.rf.gd/73354414607.pdf
    • http://betiger.epizy.com/67963180557.pdf
    • https://s3.amazonaws.com/lejivugeleguwod/rupulibilinizuxumego.pdf
    • https://s3.amazonaws.com/bidemewufa/design_evaluation_sheet.pdf
    • https://s3.amazonaws.com/xujitezu/sheets_on_the_line_hawksburn.pdf
    • http://xikisefux.epizy.com/sample_tri_fold_brochures_templates.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001111e.bin
4801647dc9d07fed519a44e8aaafe5f61807f744bd12914b6b7d80a588a8056f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1111E 5128 bytes
font_01_sfnt_off0001229a.bin
18b85507f4d7408c6871a8de0ee0449d0dfc3d649f929e5387449766c0165446		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1229A 11068 bytes
font_02_sfnt_off0001487b.bin
c8cd7d7009b29695225480cd843882ccc5e101902903e55779a5c56cac4b6c57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1487B 16396 bytes
font_03_sfnt_off00015e85.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15E85 4324 bytes

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