Malicious PDF — malware analysis report

Static analysis result for SHA-256 70533255cf23b601…

MALICIOUS

PDF

71.4 KB Created: 2021-03-03 01:25:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6b3b05f597c1e4e0ce3923a7d4f27b0 SHA-1: 546389cb0be54bc7b82937ac455ed66ec05584a5 SHA-256: 70533255cf23b6010c1e512aa2c8ee429f3c536f15f47efb20f87b17dc64dcf0
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The primary malicious indicator is the embedded URL pointing to 'mezovuduw.ru', which is likely used to host a malicious payload or redirect to a phishing site. Although no scripts were explicitly extracted, the PDF format and the nature of the heuristics suggest potential for embedded JavaScript or other exploit mechanisms.

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://mezovuduw.ru/wix?keyword=rcp+pipe+dimensions
    • https://vomogavuxif.weebly.com/uploads/1/3/4/7/134762738/5104513.pdf
    • https://cdn-cms.f-static.net/uploads/4467043/normal_5fe89ddfa8f22.pdf
    • https://zepukuliro.weebly.com/uploads/1/3/5/9/135964459/dajijusisuvepe.pdf
    • https://cdn.sqhk.co/zuxafopagad/MQifiiY/real_drift_car_racing_apk_mod_money.pdf
    • https://cdn.sqhk.co/sepagumal/gEFUhgB/80912005201.pdf
    • https://xikisujegowo.weebly.com/uploads/1/3/1/8/131856166/xegarezas_zabokuxoj_wakejejaxadu_tenurebamezem.pdf
    • https://cdn-cms.f-static.net/uploads/4366627/normal_6011eaf9d4f43.pdf
    • https://penogefuf.weebly.com/uploads/1/3/2/7/132740618/1094241.pdf
    • https://static.s123-cdn-static.com/uploads/4383695/normal_5ff9beeb394ca.pdf
    • https://cdn-cms.f-static.net/uploads/4482863/normal_600f1c06e8ecc.pdf
    • https://witaveju.weebly.com/uploads/1/3/1/4/131452735/162d6e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tetirapop.epizy.com/google_chrome_for_pc_free.pdf
    • http://xapamafoxufovig.epizy.com/what_is_the_best_knitting_machine.pdf
    • http://rurejotalovulu.rf.gd/zorujeve.pdf
    • http://xokovuwewa.epizy.com/difference_b_w_bill_of_exchange_and_promissory_note.pdf
    • http://raxajabidadida.onlinewebshop.net/yamaha_dgx-660_88-key_grand_piano_bundle.pdf
    • http://regipikiwubadov.epizy.com/despacito_song_djpunjab.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_off0000db6c.bin
2e7935eb34f164ab77ee9e1af49fc8abea08fee14994695984960d1ffde2f466
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6C 4888 bytes
font_01_sfnt_off0000ec06.bin
57c4bac228221f6c69f6da14dabfeaa4b2033a5f4b2df70d4262b5c6904e13e0
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC06 10976 bytes