Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea48965159ace74…

MALICIOUS

PDF

100.7 KB Created: 2021-04-01 18:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30f4f3ed1544bd689794c8735f467759 SHA-1: d5a8f964693623c6d3aafc48369b524fa5ececb9 SHA-256: aea48965159ace74719b160c7e1e43c35ada3c7beeb9ab22a37f9a9ab286db6a
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to an award or notification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/award?keyword=b+d+singh+pdf
    • http://punojeboza.iblogger.org/algebra_2_review_sheet.pdf
    • https://rozapalevode.weebly.com/uploads/1/3/4/7/134705228/muwutide-xukufore.pdf
    • http://titibes.iblogger.org/wogezojevikamepapumagose.pdf
    • http://wotimose.getenjoyment.net/gopujalamanufa.pdf
    • http://xudogiborijum.66ghz.com/drayton_digistat_2_installation_guide.pdf
    • https://nubeboganiroj.weebly.com/uploads/1/3/1/3/131384383/1dab302.pdf
    • http://gixipures.sportsontheweb.net/banking_awareness_for_sbi_po_2020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/19de174f-a327-46fd-849f-9067f0d3ed76/how_to_use_double_bubble_map.pdf
    • http://nubimopupugu.rf.gd/91807456703.pdf
    • http://xubexiv.epizy.com/que_hace_el_lider_de_proyecto.pdf
    • http://muvipifipu.rf.gd/56480446350.pdf
    • http://tanazutoja.rf.gd/fafikapuzazajoseg.pdf
    • http://mokijogibosa.epizy.com/dekumumovuguf.pdf
    • https://s3.amazonaws.com/fajetufekejo/logic_puzzles_apples.pdf
    • https://uploads.strikinglycdn.com/files/4a77e359-54fb-47b8-9b3e-0b7d599d9f40/22998667019.pdf
    • https://s3.amazonaws.com/fizup/14325347129.pdf
    • https://uploads.strikinglycdn.com/files/35f659bb-3368-48d1-a87b-856b3d9c0ec4/kitej.pdf
    • https://uploads.strikinglycdn.com/files/598671ec-6533-478a-a74e-602ea1d188a8/54779989655.pdf
    • http://dodixuvizovov.epizy.com/muketikutefaturuwizid.pdf
    • http://tiwatimab.atwebpages.com/61859218700.pdf
    • https://uploads.strikinglycdn.com/files/33db496d-4f61-41d3-9283-9ff27279d5b6/employee_safety_manual_examples.pdf
    • https://s3.amazonaws.com/bokofapig/93877445768.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013712.bin
f853bd3f0e6d753a1620618689d8540cd811dc984279d15c16c17286db4931bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13712 5016 bytes
font_01_sfnt_off0001482f.bin
0238b5fdf914760e24f508acb9267d6a1acc2ebfedfab1bc86bc866ee9e5c694		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1482F 11540 bytes
font_02_sfnt_off00016fb3.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16FB3 16204 bytes

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