Malicious PDF — malware analysis report

Static analysis result for SHA-256 6368d84d55512b1c…

MALICIOUS

PDF

77.5 KB Created: 2021-03-07 20:39:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 489f0f0f90a2d4f04160864368535432 SHA-1: 1e97a985924f8842ed0f94f53d15371931d50d54 SHA-256: 6368d84d55512b1cc4bbca8a1c5d309fc6e482ba7056f0e7709473664f31f0d6
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/123?utm_term=what+is+yoda%2527s+famous+saying
    • https://static.s123-cdn-static.com/uploads/4386828/normal_5feb6e4d2871c.pdf
    • http://wotidoteked.mywebcommunity.org/liwujetobabasebuwegewek.pdf
    • http://mitatizizuje.mypressonline.com/girugajajukenefawebulem.pdf
    • http://dusudun.22web.org/volume_of_cylinders_and_cones_worksheet.pdf
    • http://gubevexezu.iblogger.org/70257326738.pdf
    • https://cdn.sqhk.co/sufiwotag/Rgjh9f3/jeleboxigim.pdf
    • https://cdn-cms.f-static.net/uploads/4407314/normal_601f41fbc921d.pdf
    • http://jopagozopive.medianewsonline.com/jifewi.pdf
    • http://pejazadajenatew.getenjoyment.net/the_ministry_of_utmost_happiness_by_arundhati_roy.pdf
    • https://cdn.sqhk.co/mezutorixo/1jaMyif/65686429414.pdf
    • http://lemakomude.sportsontheweb.net/46745552247.pdf
    • https://cdn-cms.f-static.net/uploads/4450240/normal_601f817c48505.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nitaxukim.epizy.com/sunbeam_mixmaster_423a_replacement_parts.pdf
    • https://s3.amazonaws.com/tuxutedi/badibukolipuxanajijiwu.pdf
    • https://s3.amazonaws.com/mupukesunobaga/facial_features_fight_list_answers.pdf
    • https://72cdfa97-b5fe-44cc-9aa9-3142b5aa642a.filesusr.com/ugd/ee32c9_b54b82398b244fc981a0fbd7fe9ceded.pdf?index=true
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_568a39b53b604675b0e15276a644b216.pdf?index=true
    • https://bb74f61c-7045-47bf-9a7e-968101ee373e.filesusr.com/ugd/81ef4b_d7663316a9b94526a474becaf88b2e8d.pdf?index=true
    • https://s3.amazonaws.com/miledu/what_is_manual_transmission_fluid_type_a.pdf
    • https://11484d69-1612-41b9-9199-165df1f08223.filesusr.com/ugd/e2f197_05c0480a4e614bd790a2cad6eef9260c.pdf?index=true
    • https://s3.amazonaws.com/kukazowox/jeep_compass_service_center_near_me.pdf
    • https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_2e7951e3615e43609040f2a2191cf22f.pdf?index=true
    • http://bevowamudad.epizy.com/what_is_feminist_theory_in_social_science.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_off0000f254.bin
3b880ec1001f46a79d75e8732e08dbd0458e77f03f29fc39a49d7138825d00d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF254 5340 bytes
font_01_sfnt_off0001047c.bin
53e8ac355023cf289b353f1d79c8c03244dbd64e793395f570dbac6540ba64aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1047C 10592 bytes

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