Malicious PDF — malware analysis report

Static analysis result for SHA-256 4776eda80eb9ae7e…

MALICIOUS

PDF

78.6 KB Created: 2021-03-25 00:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 950995a79867367a36e901093fbcd1a4 SHA-1: 2bb470e233150b8647acda726108b923cbdc98e8 SHA-256: 4776eda80eb9ae7e53763de427f9d2b109646f699d95ed6bbc93ab895e792dad
104 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL that appears to be part of a phishing lure, disguised as a 'production cost worksheet'. While no scripts were extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://lozipotod.ru/wix?keyword=production+cost+worksheet+using+weighted-average+method
    • http://reduslim-italia.website/75520898812vaa3j.pdf
    • https://cdn.sqhk.co/kodivitedi/jpizgfv/gezefuxilinewuxitanon.pdf
    • http://autokenn.com/acer_laptop_price_philippines_i7xk5rq.pdf
    • http://limaxinsto.xyz/anuraga_karikkin_vellam_comedy_scenesnzdtl.pdf
    • https://cdn.sqhk.co/gobuwovuv/hidihjg/79654259065.pdf
    • http://kozidozilujivox.getenjoyment.net/88588493055.pdf
    • http://rte-ita.fun/437482602704iy1q.pdf
    • http://osmosiotzs.fun/rapport_de_stage_bts_batimentzrd3z.pdf
    • https://cdn.sqhk.co/reteduze/hdrsQjf/73110784582.pdf
    • http://lnstagramcopyrightmanagement.com/fokaliwaxixariiuvav.pdf
    • http://cardioactiveuficiale.site/tepugozerofabozofofacon5j.pdf
    • http://gonzo-3d.com/how_do_i_download_brushes_for_procreate_pocket2renk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pavujiniz/82933299744.pdf
    • https://uploads.strikinglycdn.com/files/59564c40-8cba-494f-9b33-432346e982c7/fewanagu.pdf
    • https://uploads.strikinglycdn.com/files/1060671d-a096-4b52-a3ce-9a08e265dd8d/what_is_the_origin_of_helter_skelter.pdf
    • https://uploads.strikinglycdn.com/files/7e48cb89-3018-4632-ba18-89cd94a75d00/how_to_perform_a_arterial_blood_gas.pdf
    • http://gefuwaw.atwebpages.com/fexagotegonazovotumexe.pdf
    • https://s3.amazonaws.com/zatasipezeg/maze_runner_death_cure_streaming.pdf
    • https://s3.amazonaws.com/gotenukevepunin/what_is_definition_of_digital.pdf
    • http://zugepoguj.onlinewebshop.net/kexutiluzida.pdf
    • http://nibemodida.myartsonline.com/basit_tremi_birleik_fiiller_7._snf_test.pdf
    • http://vilatelisoto.onlinewebshop.net/form_16_assessment_year_2020_20.pdf
    • https://uploads.strikinglycdn.com/files/dfe34125-fedc-4ebd-a7cd-020c6902c4ac/70852538958.pdf
    • https://s3.amazonaws.com/xisakazelelinim/2001_ktm_200_exc_owners_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5f3.bin
e60705c2600f7b0d370bf37f6bc6f639db9b7c6b362d079f81cbafe9c5a6f1a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F3 5572 bytes
font_01_sfnt_off000108dc.bin
a3757916d634eb4a59da806307cec3c59b7276f5c94dabb437b2f6a4d20358f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108DC 10260 bytes

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