Malicious PDF — malware analysis report

Static analysis result for SHA-256 13714afe1c8d4e86…

MALICIOUS

PDF

163.2 KB Created: 2021-02-26 18:45:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 28a276a12fdcbfb621a51005b15949f2 SHA-1: cf89dbcef0bbf0d18cd0ea7b31ae38b38f423935 SHA-256: 13714afe1c8d4e868f21f2bf2e10578c490c9c798cfe4a8c9da2041d3c671447
116 Risk Score

Malware Insights

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

The PDF contains an embedded URL and heuristic firings indicate it is a callback phishing lure, suggesting the document is designed to trick the user into contacting a malicious actor. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, limiting the analysis of specific execution chains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=state+bank+of+india+pensioners+association PDF link annotation
    • http://nakekizedexu.getenjoyment.net/jotufewowolu.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/brother_hl-2270dw_printer_toner_reset.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/jagidhd/segeralakisaf.pdfIn PDF document text
    • https://cdn.sqhk.co/bevizewo/yogfaji/73749661119.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/bijumoresoxulijutu.pdfIn PDF document text
    • https://cdn.sqhk.co/sirobuse/jJ3kCha/strategy_deck_outline.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459059/normal_5fe5718a5b6d5.pdfIn PDF document text
    • https://viwutexotopuj.weebly.com/uploads/1/3/4/5/134522905/sefijifine_tetetavabefezot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446636/normal_6035355a387da.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/fgd9Qjb/bufusuxedejejakasaguj.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/tikoweravisixu/formation_carreleur_paris.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/influenza_vaccine_fact_sheet_cdc.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/bulewokafasabapuvotas.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/cleaning_leaflets_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/baahubali_4k_full_movie_free.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002468b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2468B 5424 bytes
SHA-256: 47f1a564dc82170dd774898e6f81c64e16ccf4727c52b9c11f651638ac6a373d
font_01_sfnt_off00025908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25908 11120 bytes
SHA-256: cf8a86efb82d1a3cc0afc71313799cf5d6bf51c49d3b68d5afc8fa77dd2f8860

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