Malicious PDF — malware analysis report

Static analysis result for SHA-256 1058d74d54dbbfff…

MALICIOUS

PDF

78.5 KB Created: 2021-05-13 13:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4d8b60d56ec8e226e39615904b69931 SHA-1: c24fa03b596179f7854226aa07997a808d076f7c SHA-256: 1058d74d54dbbfff9cb165dee0ec378c76f117f6a86bf96388befcb32bac485b
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 ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a pretext related to personal profiles to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/strik?utm_term=what+do+you+write+in+a+personal+profile
    • https://cdn.sqhk.co/kefekawit/jggCStc/51768034331.pdf
    • http://reduslimitalia-official.website/final_heroes_best_teambx2a4.pdf
    • http://wosozage.mypressonline.com/business_law_obligation_and_contract.pdf
    • https://static.s123-cdn-static.com/uploads/4485165/normal_5ff5ffe73ad27.pdf
    • http://sibatike.getenjoyment.net/how_do_you_find_density_with_length_width_and_height.pdf
    • https://cdn-cms.f-static.net/uploads/4491671/normal_5fdb7aecd27c0.pdf
    • http://ganitigusawev.mygamesonline.org/30091514854.pdf
    • https://cdn.sqhk.co/dukasavubu/idsJXgc/344109616.pdf
    • http://twitter-center.com/metformin_dose_in_renal_failurewey6d.pdf
    • http://detonic-de.website/nev_catfish_story6e36r.pdf
    • http://help-lnstagram-verifycopyrgiht.com/pelicula_la_charca_con_adamaris_lopez398m6.pdf
    • http://resimpub.com/hamilton_beach_coffee_maker_owners_manualpo9yr.pdf
    • https://cdn.sqhk.co/fubemabofof/6QieThi/gutoteziloripimuvurik.pdf
    • https://cdn.sqhk.co/fezusife/0bLOjiX/xawilabivegosenujujuzepo.pdf
    • https://cdn-cms.f-static.net/uploads/4468828/normal_60184564e52cf.pdf
    • http://maxoranano.sportsontheweb.net/toruvilamujeroxovisa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4bcaaa8d-00c5-463b-af46-e8c7f863a63e/their_eyes_were_watching_god_study_guide_student_copy_answers.pdf
    • https://uploads.strikinglycdn.com/files/10ad3647-86b0-43ab-9333-302d50192b59/4180010626.pdf
    • https://uploads.strikinglycdn.com/files/bf175425-73ce-47c3-ac79-c4555a6b1e8d/roland_micro_cube_gx_reddit.pdf
    • https://uploads.strikinglycdn.com/files/bd70a199-4dd5-4e26-a14b-ec1271e9902b/91407767807.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_off0000f5f3.bin
fd9e8ef713e591c028d922959e2612814331af4bb38d805a6b9de09e5a034cba
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F3 5336 bytes
font_01_sfnt_off00010831.bin
9afebeb95d9ed338316b88f406682d92c4b1cd569f0ea07df8577de9df3bd69f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10831 10508 bytes