Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b5dba2029d2eee…

MALICIOUS

PDF

76.5 KB Created: 2021-04-04 03:24:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf82428861931d5bd3b878d01eca39d7 SHA-1: 892f81b1f15ffccc45c9ae05c949cee4f7ec6b3e SHA-256: e3b5dba2029d2eee31ffcb818d106d2864e90f7b2b6979515be3e9b2d2f86b93
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by a ClamAV detection and an ML classifier. It contains an embedded URI pointing to 'https://ponafet.ru/award?keyword=ethiopian+orthodox+bible+in+english+81+pdf', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to religious texts to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/award?keyword=ethiopian+orthodox+bible+in+english+81+pdf
    • https://lemapemoj.weebly.com/uploads/1/3/4/0/134040436/64e6b8.pdf
    • https://gewujezugiwo.weebly.com/uploads/1/3/4/7/134754524/7abf153e23.pdf
    • http://beviluxenumiliv.mywebcommunity.org/50965198287.pdf
    • https://govonomuvilikiw.weebly.com/uploads/1/3/4/6/134620083/6035294.pdf
    • https://cdn-cms.f-static.net/uploads/4410441/normal_601214956a8d6.pdf
    • https://cdn-cms.f-static.net/uploads/4378381/normal_5fd0e7a2a2009.pdf
    • https://lurexiji.weebly.com/uploads/1/3/4/5/134594132/devopojomuzifoveto.pdf
    • http://gagimubu.mywebcommunity.org/flowers_for_algernon_dr_strauss_point_of_view.pdf
    • https://static.s123-cdn-static.com/uploads/4418399/normal_5ff9afa2ccd3c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d0482d20-bfee-4c90-a327-8c1d3d43346f/who_is_eligible_for_snap_in_pa.pdf
    • https://s3.amazonaws.com/dutuzanob/railroad_retirement_board_disability_forms.pdf
    • https://uploads.strikinglycdn.com/files/f0e51e50-4506-480e-b8e8-b35bc0b8e17a/logitech_extreme_3d_pro_star_wars_squadrons_ps4.pdf
    • https://s3.amazonaws.com/jivamubug/lame_enc._dll_audacity_1._3_beta.pdf
    • http://lapekekefexe.rf.gd/nimakaliropokimu.pdf
    • https://s3.amazonaws.com/panokojol/ritoz.pdf
    • http://sakigekoxigukil.epizy.com/castlevania_game_pc.pdf
    • http://sazasewugekupej.onlinewebshop.net/96536824378.pdf
    • https://s3.amazonaws.com/bisiku/99359366247.pdf
    • https://s3.amazonaws.com/voxipanovigepiv/wavelet_transform_theory.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_off0000ed3c.bin
ab4d04a72907f98d1818c7a016b845efa79a9033b727f049aacba05582def6ac
pdf-font-stream PDF embedded font (sfnt) at offset 0xED3C 5712 bytes
font_01_sfnt_off000100a5.bin
cae57d11c666e877f11bbddd4bd9491c0b6be3aafaaf3722495bbed447a2afdc
pdf-font-stream PDF embedded font (sfnt) at offset 0x100A5 10504 bytes