Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f155198a87a96d2…

MALICIOUS

PDF

70.5 KB Created: 2021-03-15 07:49:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e8428060ac95c4237d279abaa19898f SHA-1: 7a108c81d0fe4e71570ab95c929ac0f53983c723 SHA-256: 5f155198a87a96d24549f3514c1396e87eef86776640cc809a202282924fac17
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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://midufefew.ru/wix?keyword=goal+zero+guide+10+plus+solar+kit+nomad+7
    • http://mezazasakejel.iblogger.org/academia_vampirilor_vol_2.pdf
    • http://fimufajupasi.22web.org/simplicity_regent_44_mulching_kit.pdf
    • https://sararilaba.weebly.com/uploads/1/3/1/4/131482808/863078.pdf
    • http://xivisugewikoju.iblogger.org/shark_press_and_refresh_attachments.pdf
    • http://nubuxeki.scienceontheweb.net/changeling_the_dreaming_download.pdf
    • http://bejisosubonito.sportsontheweb.net/86867868260.pdf
    • http://lukufogud.getenjoyment.net/nawiperiwivuve.pdf
    • https://juzuxadubibipa.weebly.com/uploads/1/3/4/6/134685448/2404e7e6392.pdf
    • https://kelogukagikuval.weebly.com/uploads/1/3/0/7/130739039/finabosuti-tazusulop-bopuwadifox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://baniduzi.epizy.com/46681959990.pdf
    • http://sugexure.rf.gd/bevopasorobogudilevunib.pdf
    • https://uploads.strikinglycdn.com/files/3c5692d0-d88c-4a16-a1cd-cd89dedee515/how_to_do_tapping_to_lose_weight_fast_on_keto.pdf
    • https://c8019651-2137-4367-b38e-775fff3f8a75.filesusr.com/ugd/fc5a02_10f5c66c7a2f4cc29152b9e896625fed.pdf?index=true
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_e1f56251287f4f1e8e78260d94bff518.pdf?index=true
    • http://sajajuladepume.rf.gd/american_history_textbook_11th_grade.pdf
    • https://uploads.strikinglycdn.com/files/ce6a3f8f-8927-432e-a053-8297713813f0/how_to_do_sat_math.pdf
    • https://uploads.strikinglycdn.com/files/d72667f5-f60a-4506-9074-7a9916075948/33641144857.pdf
    • http://wepaxilex.epizy.com/67780962420.pdf
    • http://bumunosusub.epizy.com/61585071313.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_off0000d12b.bin
ce45d1fd2b05277da3fe4b11f37093d0e99b3ed67d3b14e7ad8b284aedfa7efe
pdf-font-stream PDF embedded font (sfnt) at offset 0xD12B 5696 bytes
font_01_sfnt_off0000e48a.bin
77941c24551ffc33851f093393d763347b48180cbc26cd4878ce64a55c453639
pdf-font-stream PDF embedded font (sfnt) at offset 0xE48A 11240 bytes