Malicious PDF — malware analysis report

Static analysis result for SHA-256 da52e10ff886ff93…

MALICIOUS

PDF

80.6 KB Created: 2021-02-12 13:16:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d304a07bd319ed89cd0f00e23aa94de3 SHA-1: b06aa900780443e9a0be2cf1d82124d4002a0b1e SHA-256: da52e10ff886ff93ab932c15108cbf802520e6824d46bf95f219160c6efb6444
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. The embedded URL, 'https://druttle.ru/wb?keyword=south%20movie%202018%20free%20%203gp', suggests a phishing or social engineering lure related to movie downloads. While no scripts were explicitly extracted, the PDF structure and the nature of the embedded URI strongly suggest it's designed to trick users into visiting a malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=south%20movie%202018%20free%20%203gp PDF link annotation
    • https://zafudibibini.weebly.com/uploads/1/3/4/1/134108698/38947fe25f9.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/B5Oeidk/digi_sport_live_stream_hungary.pdfIn PDF document text
    • https://cdn.sqhk.co/nakijalufiw/lspheha/chicago_police_scanner_app_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393514/normal_5ff273b747abb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388276/normal_5fcfef863928d.pdfIn PDF document text
    • https://xelegiri.weebly.com/uploads/1/3/4/4/134435730/gimomib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391008/normal_5ffaa26b0ab6c.pdfIn PDF document text
    • https://cdn.sqhk.co/madilaxetevo/xAjekII/gesixepadaribimewifuf.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/dhCgfK9/45763209269.pdfIn PDF document text
    • https://belanuxaru.weebly.com/uploads/1/3/4/6/134670531/fukamir.pdfIn PDF document text
    • https://cdn.sqhk.co/vudemijugamu/ih9nN5U/how_do_you_fill_holes_in_wood_furniture.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/crop_production_business_plan_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/kawinejavaminilo.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/jigoteferugidunutog.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/mesarewun.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_off0000e177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE177 7608 bytes
SHA-256: cc836bccd2409de5c3fd6e6dba3798b2a9f9c8e1db509266adff5d4f5d653584
font_01_sfnt_off0000fb27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB27 5744 bytes
SHA-256: d52062a454cd5673eb7c0a5fe84bf6a08a5339d0c29cc6ce581bcf9e264a8755
font_02_sfnt_off00010ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA8 11352 bytes
SHA-256: c7d7a440a22c81c6ae7a7b4bad273eb2cd9fe62cb4f7570590adc31d943dc000

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