Malicious PDF — malware analysis report

Static analysis result for SHA-256 736c6056da4428d4…

MALICIOUS

PDF

85.1 KB Created: 2021-03-01 12:31:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f9d849958d444415bcf09139e05ecc75 SHA-1: c5bf6afd1b8825ae15583814752fe1d47e102346 SHA-256: 736c6056da4428d46d64091315e2b6bb591be0eb98b85ae9388adec3b312f55a
104 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, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or lead to a phishing site. The presence of a visual download button heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/award?keyword=kitchenaid+artisan+mixer+4.8l+white PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455914/normal_6002789c73270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387035/normal_6001c026a8c45.pdfIn PDF document text
    • https://xowebanum.weebly.com/uploads/1/3/1/4/131453595/tobej_vulolaxus_kezobasovaza_lufoluxug.pdfIn PDF document text
    • https://pawizujepus.weebly.com/uploads/1/3/1/6/131637171/lupewanamikorukok.pdfIn PDF document text
    • http://jepewadagamer.scienceontheweb.net/xudeperumexudusesixobexo.pdfIn PDF document text
    • http://vebumugaw.22web.org/how_many_calories_does_kundalini_yoga_burn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427509/normal_6024a4ee36bde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463279/normal_6000036437c8f.pdfIn PDF document text
    • http://gudokav.sportsontheweb.net/what_is_another_word_for_remove_errors.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503279/normal_6035f5e527633.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/70914060958.pdfIn PDF document text
    • http://vuwavutos.iblogger.org/halal_food_guide_new_zealand.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447096/normal_6039a2dacf5c7.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/22311642699.pdfIn PDF document text
    • https://somalinoduka.weebly.com/uploads/1/3/5/3/135392385/baguremuzaxid-dotoju.pdfIn PDF document text
    • https://barijimuje.weebly.com/uploads/1/3/1/4/131406344/82e13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494877/normal_5ff10857cceb7.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/guwotawezelojejopos.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/12706253237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pinezininefos.epizy.com/batman_begins_movie_in_tamilrockers.pdfIn PDF document text
    • http://jevazebi.epizy.com/driver_booster_3_softonic.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA67 5300 bytes
SHA-256: 315d61e5247c82e9d027b9243d304b2f8c4be87e99b8f756c47c1732e6c59d4a
font_01_sfnt_off00010c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C49 14152 bytes
SHA-256: edf2626d2c67706bb29e77afb4a0b656c4c292530b8116e0a79f57fa47f85a94
font_02_sfnt_off000138c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138C4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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