Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fbe1da5a6b122db…

MALICIOUS

PDF

56.7 KB Created: 2021-03-20 02:19:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2ce6fda79f9d6bf22e483f4f99e5cdc1 SHA-1: a782a3ac13a6e3d8844a771516f9649a737673b8 SHA-256: 4fbe1da5a6b122dbe717ab40f1f80a9d3267ea0af72aa8bb2e3de0bd701270d7
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/strik?utm_term=parenting+stress+index+italiano+pdf PDF link annotation
    • https://cdn.sqhk.co/revipidamog/Ehjsgjh/one_more_line_game.pdfIn PDF document text
    • http://smartradiobf.ru/ca_lease_agreement8v4my.pdfIn PDF document text
    • https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/xurujo-boxeruvamozeza.pdfIn PDF document text
    • https://rejomopoxe.weebly.com/uploads/1/3/1/3/131383333/benaromujubi-bopirifog-ribupiniterumi.pdfIn PDF document text
    • https://petominezejoza.weebly.com/uploads/1/3/2/3/132303337/4280976.pdfIn PDF document text
    • https://cdn.sqhk.co/tusujoxaseru/jLiahiT/jekatibaju.pdfIn PDF document text
    • http://static-get.top/hero_xpulse_200t_top_speediy2bu.pdfIn PDF document text
    • http://damvglaz1.xyz/class_11_english_book_state_board0ph3k.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivunet/be9qR0m/subway_surf_game_play_online.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/lidfr8l/kavukewekijazuvopotitivi.pdfIn PDF document text
    • https://fegoluxojelab.weebly.com/uploads/1/3/4/4/134490239/vuvebazezob-pofatomejitar.pdfIn PDF document text
    • https://cdn.sqhk.co/nanagajog/kkheChi/2480619224.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/jahhhdo/66880726458.pdfIn PDF document text
    • https://fevebelok.weebly.com/uploads/1/3/4/0/134012800/d43f3e2f8c4eaa8.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/Ji3z5hb/mobile_ringtone_romantic_song_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f3a0f20-73c5-436b-89f1-f163824d1271/does_the_black_guy_in_green_mile_die_in_the_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed5c6aa9-1c48-4ca0-a12e-189ce7f6773d/addition_chart_1-100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0fb43c7-bec1-4f26-847d-9686e78623b5/best_summer_quotes_tumblr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5360c36a-2dfe-468c-ba10-fc872e9ad088/the_5th_wave_sequel.pdfIn PDF document text