Malicious PDF — malware analysis report

Static analysis result for SHA-256 0846ac94f3c50f92…

MALICIOUS

PDF

113.6 KB Created: 2021-03-15 06:56:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d792f14b505c79e0e7c4bda94261067f SHA-1: 466cfb513e3dbf422ba6329199b4923d831dafc8 SHA-256: 0846ac94f3c50f92c77dbd67ed74620edc4336ab6e4afa6b3ba83d6f049e8552
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/strik?utm_term=how+to+prime+a+wagner+paint+crew+sprayer
    • https://cdn.sqhk.co/komiburufezo/jhoWuLL/sibomesupogazudidiguwog.pdf
    • http://pigigozoruda.mypressonline.com/vodaporizetufi.pdf
    • http://tugokutuli.scienceontheweb.net/which_sewing_patterns_are_best_for_beginners.pdf
    • https://cdn.sqhk.co/kawonidoza/jekBghA/royal_farms_arena_capacity.pdf
    • https://cdn.sqhk.co/putevupumaf/8hfnjgd/visual_studio_code_reformat_xml.pdf
    • http://tanivikovome.sportsontheweb.net/automobile_engineering_textbook.pdf
    • https://cdn.sqhk.co/posojuvapono/hidehgL/watafukowavifojepuxewumud.pdf
    • http://dogalijun.scienceontheweb.net/comment_prendre_confiance_en_soi.pdf
    • http://maritimog.medianewsonline.com/katamabegoropurazivanu.pdf
    • http://nusowutevu.getenjoyment.net/5_examples_of_figurative_language_in_the_highwayman.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bejeseja/31832328912.pdf
    • https://uploads.strikinglycdn.com/files/efe28671-1d2e-4860-992a-30d48c17fd0d/why_wont_my_mobility_scooter_charge.pdf
    • https://s3.amazonaws.com/xamapebonijos/csf_ka_full_form_batao.pdf
    • https://uploads.strikinglycdn.com/files/c58d2e65-f359-40e9-a5c8-b67b141843ec/sururunasipapiwebeb.pdf
    • http://seniduvako.epizy.com/characteristics_of_management_science.pdf
    • http://fosixijikalapi.epizy.com/9267850301.pdf
    • https://s3.amazonaws.com/zufaxepixiguxax/8252957783.pdf
    • http://rajixubododafu.epizy.com/college_football_workout_program.pdf
    • https://uploads.strikinglycdn.com/files/9fca5f86-a308-4b1c-811e-5cef23c24dff/40585811719.pdf
    • https://s3.amazonaws.com/wofaxil/57762459481.pdf
    • http://pawuzax.onlinewebshop.net/tixowab.pdf
    • http://vuzogumav.rf.gd/29287815138.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_off000164b3.bin
d37b60fc68129fabb5be1057816cdeb0866bf417e385e1e1ad6eb3350a640b66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x164B3 5376 bytes
font_01_sfnt_off000176fc.bin
90a0cbbec9c6b2320e282fb36dceb34861d88ff78ee647f7019e192117f482e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x176FC 13280 bytes
font_02_sfnt_off0001a35c.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A35C 16204 bytes

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