Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1b454f19ef27a9…

MALICIOUS

PDF

70.1 KB Created: 2021-03-08 02:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55d336e91dfd22b3ed17e4ce8021f5b2 SHA-1: 15aa81e3811be06ff486afefc6e642a20c980bb9 SHA-256: 0e1b454f19ef27a9eaa35fca9e8b1f8cbff62a81c2008bdec98d2baf4b34584b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with the primary one being 'https://crophysi.ru/strik?utm_term=what+is+thirty-one+bags', suggesting a phishing or malware distribution lure. The presence of PDF-specific heuristics further supports its role as a malicious document.

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://crophysi.ru/strik?utm_term=what+is+thirty-one+bags
    • https://jekodijup.weebly.com/uploads/1/3/4/4/134490718/9506689.pdf
    • http://xubanapirobula.mypressonline.com/what_is_the_theme_of_the_book_24_hours_in_nowhere.pdf
    • https://cdn.sqhk.co/wapuwozelob/Yje1vGu/game_voice_chat_application.pdf
    • https://defiduzumuxel.weebly.com/uploads/1/3/2/6/132682342/0fdf45eb4.pdf
    • https://cdn.sqhk.co/zonigita/ugcBagc/shark_bites_fruit_snacks_90s.pdf
    • https://cdn.sqhk.co/dobulefipuji/qjap7GL/blockchain_wallet_scams.pdf
    • https://cdn.sqhk.co/pekotegafod/cuDChh3/94140908508.pdf
    • https://static.s123-cdn-static.com/uploads/4417049/normal_5fc93482e862f.pdf
    • https://cdn-cms.f-static.net/uploads/4491437/normal_602ab8d790427.pdf
    • https://cdn.sqhk.co/wugolekufo/hbhe1ly/big_easy_wings_restaurant_new_orleans.pdf
    • http://surupumigo.mypressonline.com/pod_x3_live_factory_reset.pdf
    • https://fidexirubopuzer.weebly.com/uploads/1/3/2/8/132815065/wudovelidovejebo.pdf
    • https://cdn-cms.f-static.net/uploads/4473384/normal_60403a63ee003.pdf
    • https://cdn.sqhk.co/morureju/gfjajh6/alien_and_monkey_full_movie_english.pdf
    • https://cdn.sqhk.co/devuzemalut/igpT3Gx/sefuwativ.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_c7c764b86fad4533bd5fbc908139c208.pdf?index=true
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_336ea0f0635f47fdb75fd286e1b0e82a.pdf?index=true
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_7cf852e87e2a49518669ef7824f148ff.pdf?index=true
    • https://b1b1ed1d-a631-407f-b8a0-2f609481a9c2.filesusr.com/ugd/3e5895_c3793d2cf2c4446997ce05ecff786733.pdf?index=true
    • 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_off0000d48c.bin
5d2eda30be285eb8142368914aeb899592d1d50ab3c0dc1f9646a85aefc4d279
pdf-font-stream PDF embedded font (sfnt) at offset 0xD48C 5204 bytes
font_01_sfnt_off0000e656.bin
05cff6cea75307090f1353fd518be3e83f43eb234d512ab66c5d3ed8eb3cd1a8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE656 10972 bytes