Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c847a1f918ce397…

MALICIOUS

PDF

83.3 KB Created: 2021-03-25 15:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd168aeaf23212c2efa18b5fab07f6b3 SHA-1: 3600c7eafdeda612eda67d25b1cd13bb19029e74 SHA-256: 2c847a1f918ce397a946247002d08c5fd1d891d5d7ebadb9744b3e379eb80e2a
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 that directs users to a suspicious domain, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/wix?keyword=google+student+ambassador+2019+india
    • https://nimifitirujaga.weebly.com/uploads/1/3/4/6/134693460/1349418.pdf
    • http://form-lnstagramcopyrightservices.com/2611077733223kic.pdf
    • http://politach.com/92571749051b2lt1.pdf
    • https://togijiwasifuva.weebly.com/uploads/1/3/1/3/131398416/gabara.pdf
    • https://cdn.sqhk.co/vasinabew/jdgfOGQ/hidden_object_mystery_games_iphone.pdf
    • https://cdn.sqhk.co/pomiwuximu/jdM9jew/bozoxiramabubuxepaxuzamum.pdf
    • http://registrat.space/79350606059lbqt8.pdf
    • https://sopudediliwaweg.weebly.com/uploads/1/3/4/5/134587721/8812a98bd6e3.pdf
    • https://cdn.sqhk.co/vudupapuj/eghMTii/57481568506.pdf
    • http://nasty666.space/photo_mechanic_5_serialmzpp3.pdf
    • https://nofakuxuwuxow.weebly.com/uploads/1/3/4/6/134684799/kisozukekamet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://zubidoziradep.rf.gd/understanding_and_using_english_grammar_3rd_edition_free_download.pdf
    • http://vitegunarigiri.epizy.com/9178121043.pdf
    • https://s3.amazonaws.com/daxemo/18935274134.pdf
    • https://uploads.strikinglycdn.com/files/e128af1b-a9c3-431b-9376-012fb0f37219/dubisemovadejuzadusu.pdf
    • https://uploads.strikinglycdn.com/files/dc4afe0d-a027-4804-9b7a-4c429a93409e/78333203774.pdf
    • https://uploads.strikinglycdn.com/files/7a1f8ff4-99c4-4d19-b65e-ed201900fbfa/73718073450.pdf
    • https://s3.amazonaws.com/xurixado/13963006164.pdf
    • https://s3.amazonaws.com/zalomi/cutting_edge_upper_intermediate_workbook_answer_key.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_off0000f781.bin
20d29b82b9052e3ca2b410eec96e26eadab223d7ea044741db481d8d17204d82
pdf-font-stream PDF embedded font (sfnt) at offset 0xF781 5800 bytes
font_01_sfnt_off00010b26.bin
e8d8fe79f7295f477432ab82e23f03ef3593df763ee828b810efa53471b6ed68
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B26 10968 bytes
font_02_sfnt_off000130d5.bin
8d4bb3c8b4557aa94f0e37e93284f180a6ae19ab65be036482738afc79e3fc7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x130D5 3272 bytes