Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef6c1997994c6c0…

MALICIOUS

PDF

99.3 KB Created: 2021-03-19 10:20:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1bb82ac18b3d2d7c632951e7f6a5592a SHA-1: 7ca162a3b50702e9f99be48c0d60fe418de587d4 SHA-256: cef6c1997994c6c06923e8359309f20d4df4b900566d53a72f3a2e5c51765035
176 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, including language related to prizes and parcel delivery. The presence of an external URI pointing to 'seumenha.ru' suggests a potential download or redirection to malicious content. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving a phishing or trojan payload delivered via the embedded URI.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://seumenha.ru/strik?utm_term=insert+audio+file+wix
    • https://cdn-cms.f-static.net/uploads/4420766/normal_5fe6eb6663a66.pdf
    • https://sikiroradimer.weebly.com/uploads/1/3/4/6/134619363/figawoxavazeta_xiraxomasatu_xipewotaxo_roladun.pdf
    • http://gojawufeki.getenjoyment.net/gerededemodesowepofi.pdf
    • http://worameruvejaka.mywebcommunity.org/white_rodgers_1e78-144_reset.pdf
    • https://cdn-cms.f-static.net/uploads/4373519/normal_604893f90d0ef.pdf
    • https://kumeboxisadinur.weebly.com/uploads/1/3/4/6/134684257/5975636.pdf
    • http://wumiwuzigimo.mywebcommunity.org/harga_g_shock_ga_100_cb.pdf
    • https://kobejepofefes.weebly.com/uploads/1/3/5/3/135317692/815182.pdf
    • http://fiziwafofekaku.mygamesonline.org/kovevejidijagikavol.pdf
    • http://nuxuzuruguli.mypressonline.com/sap_abap_programming_examples.pdf
    • http://zoneeuro.pro/esen_yaynlar_matemat9h84p.pdf
    • http://websecurer.tech/45132519819jsrwv.pdf
    • http://reduslim-eu.site/international_bar_associations_young_lawyersdgktu.pdf
    • http://shopsmmv.site/native_instruments_traktor_kontrol_s4_mk3_review4ymw6.pdf
    • https://static.s123-cdn-static.com/uploads/4376600/normal_60059a03252f0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dodemupisam.epizy.com/daruvetavuwametazugilu.pdf
    • http://jigosip.epizy.com/nonstop_ball_mod_apk.pdf
    • http://gegapitigiz.rf.gd/ccna_security_dumps.pdf
    • http://misopipe.rf.gd/beer_pong_rules.pdf
    • http://fuvuvadut.onlinewebshop.net/data_analytics_certification_courses_online.pdf
    • http://kidinefa.rf.gd/mathematical_modelling_nptel.pdf
    • http://wulibazosuxib.onlinewebshop.net/7955315954.pdf
    • http://wodowepakimeko.onlinewebshop.net/76902691009.pdf
    • http://zorijefugixor.atwebpages.com/matejavimumab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013968.bin
32363e0baaea8f800c16a153a77eaeb8504710fa0384eaf0731ac6dc60671908		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13968 4880 bytes
font_01_sfnt_off00014a14.bin
f11a3379bb4fe755e8db4bc486a9e278caf4f1fa073c63ab230835f41d854f2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A14 11524 bytes
font_02_sfnt_off0001711a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1711A 4324 bytes

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