Malicious PDF — malware analysis report

Static analysis result for SHA-256 e65f42dc6f12f0a3…

MALICIOUS

PDF

86.8 KB Created: 2021-03-30 14:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e52da9d357db7f70955e2ad6ce9987c SHA-1: 28a6aa582de4b574bc36d82d2dcfcbbafb9ffeb9 SHA-256: e65f42dc6f12f0a35881c9c1134c4e4af64ef0c64f5b8998c9694aa035e138cb
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 URL. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, appears to contain metadata related to firearm parts, likely a lure to disguise the malicious intent of the embedded link. The primary malicious action is the redirection to an external URL, which is a common technique for phishing or malware distribution.

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://kuzutuzo.ru/strik?utm_term=winchester+model+94+30-30+rear+sight+replacement
    • http://xepidenad.scienceontheweb.net/how_to_program_rc_remote.pdf
    • http://zonerokemub.getenjoyment.net/celestron_nexstar_6se_telescope_for_sale.pdf
    • http://vukojekan.mypressonline.com/baudelaire_poemas_en_prosa.pdf
    • http://gaximivotekole.mypressonline.com/how_to_reset_swann_dvr8-4575.pdf
    • http://mopexaxurip.getenjoyment.net/93723598167.pdf
    • http://tuduvodakep.mypressonline.com/fedijiwudinakenixuruv.pdf
    • https://cdn.sqhk.co/wukufazujuv/Ghd5g5b/66268893660.pdf
    • https://cdn.sqhk.co/zazavoxujub/djavXaX/smash_badminton_academy_ratings.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dijemawijopetu.epizy.com/fupefitivuse.pdf
    • https://s3.amazonaws.com/wemupajese/76659239529.pdf
    • https://uploads.strikinglycdn.com/files/9300aabf-f683-45a8-a160-5efb2f6f5267/besowamibokowaxum.pdf
    • http://rixibedi.onlinewebshop.net/polo_ralph_lauren_coupon_2021.pdf
    • https://s3.amazonaws.com/zifozujiwi/d._e._b._s_2004_movie.pdf
    • http://lodusebivepakef.epizy.com/36249918350.pdf
    • http://pazatirademe.rf.gd/nice_guidelines_endometriosis_quick_reference.pdf
    • https://s3.amazonaws.com/setaxilitozuko/corporate_development_interview_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/41fca4c9-4219-462d-84b1-1ae8755631ae/jomitidemupaxagewikob.pdf
    • https://uploads.strikinglycdn.com/files/ecccba44-fb76-4e5d-9344-331425a627b4/kaplan_asvab_login.pdf
    • http://vulekagezefodek.rf.gd/15328219613.pdf
    • http://gilupusaxuzamo.epizy.com/best_place_to_buy_easton_arrows.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_off000112f0.bin
0efaad03eefa6dbbf05ac3973bdca346b54d31e22328123864b9ce412f95f225
pdf-font-stream PDF embedded font (sfnt) at offset 0x112F0 6080 bytes
font_01_sfnt_off0001278c.bin
8ece7791ca4e3428beb97583dd1e070c8496da199c52d50e393526e410c8a654
pdf-font-stream PDF embedded font (sfnt) at offset 0x1278C 11268 bytes