Malicious PDF — malware analysis report

Static analysis result for SHA-256 5263b6fe6a81d403…

MALICIOUS

PDF

92.0 KB Created: 2021-03-14 15:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4769fa50875c6f138883ed3a72d7eff SHA-1: beee8f025e9f7ee88454ae96e803033e210ca526 SHA-256: 5263b6fe6a81d4038fd07693abb250d21a9a9948925c6596edc1a609db74795a
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 suggest it's designed to exploit users by presenting a lure related to 'aeromagnetic survey pdf' and redirecting them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/award?keyword=aeromagnetic+survey+pdf
    • http://xuwiropexij.iblogger.org/46368787868.pdf
    • http://tulutita.sportsontheweb.net/32949971065.pdf
    • http://hellesypakk.online/sefekexekir2ph7j.pdf
    • http://gexopidikimo.mygamesonline.org/john_deere_commercial_mowers_for_sale_used.pdf
    • http://poroda.site/avery_shipping_labels_template_5126s03mg.pdf
    • http://pifemukopisare.sportsontheweb.net/canon_600d_manual.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/pogolo/virowemepatipe.pdf
    • http://gogewarixisude.epizy.com/manipobekeve.pdf
    • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_f233de27a4ec4c74abd47cd46a84e8c6.pdf?index=true
    • http://wanuzenupikow.rf.gd/gopax.pdf
    • http://selominur.epizy.com/recoleccion_de_datos_para_investigacion_cualitativa.pdf
    • https://47c0d0ed-94e3-447f-940a-e265262d053f.filesusr.com/ugd/a43ec6_57f511851b744585978d1fcbb70d36bc.pdf?index=true
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_12d6429ccd964b5fa226ba2807f9e470.pdf?index=true
    • https://9e2b3e3a-6a02-4d3b-8ba9-5acc01041672.filesusr.com/ugd/66c878_684f4b0202d64400ac86b5330d6d2ffd.pdf?index=true
    • https://s3.amazonaws.com/jupoti/kufalijitavarumokunawu.pdf
    • http://pokitudid.epizy.com/tenant_notice_to_landlord_template.pdf
    • https://s3.amazonaws.com/farezelof/96598908013.pdf
    • https://981168d4-05fc-44b6-871d-73371d7e8cf1.filesusr.com/ugd/87d215_5be1f0458de847148565551de17dd713.pdf?index=true
    • 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_off00011a8b.bin
61020ad1de8404b326720d934162996e85e4c2d786200bfdef5305664f989ebe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8B 5476 bytes
font_01_sfnt_off00012d1d.bin
4571130954aad811ffab22f99e6a30ac09489147fc141c2d066834fd1c9cad82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D1D 11696 bytes
font_02_sfnt_off000154dd.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x154DD 4324 bytes

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