Malicious PDF — malware analysis report

Static analysis result for SHA-256 68fafc55d66570bc…

MALICIOUS

PDF

89.5 KB Created: 2021-04-03 06:44:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b8781ea2a8f4f764126977aad8ad276 SHA-1: d907999d47980acc2341bd3907f7c1b40e6d579b SHA-256: 68fafc55d66570bce045577089d2e0b1830953b491b35b653ac87be91d4d169f
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. While no scripts were extracted, the presence of external URLs and the nature of the ClamAV detection (Pdf.Phishing.Trojan) suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://lozipotod.ru/award?keyword=media+planning+and+strategy+in+advertising+pdf
    • http://tefitagesev.mypressonline.com/5433507330.pdf
    • https://static.s123-cdn-static.com/uploads/4368979/normal_5ff2373868d55.pdf
    • https://cdn.sqhk.co/buzaxelubot/haqthfp/the_banner_saga_3_switch_review.pdf
    • https://bawufavipefal.weebly.com/uploads/1/3/0/7/130740211/05d6ef.pdf
    • https://cdn-cms.f-static.net/uploads/4413969/normal_600fafce86212.pdf
    • https://gujinaberukigav.weebly.com/uploads/1/3/1/8/131856979/8ff508a97a386.pdf
    • http://fipixavonusin.iblogger.org/can_a_sprint_samsung_galaxy_s9_be_unlocked.pdf
    • https://jileninaniwepuz.weebly.com/uploads/1/3/4/7/134771173/jikiger.pdf
    • https://pasezarovatif.weebly.com/uploads/1/3/4/8/134858127/sajozaxeligigububi.pdf
    • https://cdn-cms.f-static.net/uploads/4445118/normal_6034cb99b9ac5.pdf
    • https://bigimenuxorotel.weebly.com/uploads/1/3/4/6/134655509/wiresusowem-ludulolazefezek.pdf
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/06b579b6c730.pdf
    • http://geponimodenebev.22web.org/kisotaso.pdf
    • https://cdn.sqhk.co/muvifisi/hjcLOhh/used_helicopter_flight_simulator_controls_for_sale.pdf
    • https://static.s123-cdn-static.com/uploads/4446937/normal_5fc6692a7bdeb.pdf
    • http://ginizamiterog.22web.org/materials_and_the_environment_ashby_download.pdf
    • http://zawopim.mygamesonline.org/jinaludurukane.pdf
    • http://kikifikoxije.mypressonline.com/cover_letter_for_teaching_job.pdf
    • http://sekejibugu.iblogger.org/46924280576.pdf
    • http://zosazufinur.mygamesonline.org/polowaz.pdf
    • https://fepexugoroba.weebly.com/uploads/1/3/4/4/134469665/45df3feddc3bc.pdf
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/5df3553af.pdf
    • https://static.s123-cdn-static.com/uploads/4418370/normal_5ff05f5896dad.pdf
    • https://cdn.sqhk.co/guxifunuris/bYjiOCx/santorini_greek_grill_mckinney_texas.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bugenerefajujus.atwebpages.com/how_to_rate_proficiency.pdf
    • http://nonosolagosev.epizy.com/chernobyl_hbo_web_series.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_off00011f83.bin
a97df22334c3e18fd7fcd24d8eadb7a42ad77788ab82f5fe783dbc4c079782f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F83 5376 bytes
font_01_sfnt_off000131f4.bin
ae25371fbe4316fb2409884e6b952d5622560831b4b6db33d617a8aa0632c456		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131F4 11328 bytes

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