Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5117a49de5cc60b…

MALICIOUS

PDF

84.5 KB Created: 2021-04-26 03:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62bae1b0feef3b57d65fccb295978be7 SHA-1: 4a22804bed7ae106aeaa99a37b8b4817d26fdd61 SHA-256: e5117a49de5cc60b1169f274eb4303a0ba9319f859067f45889440d91203b211
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The primary URL, 'https://gimoguvi.ru/strik?utm_term=jbl+flip+3+waterproof+rating', suggests a lure related to product reviews or deals, which is a common tactic for phishing or SEO spam. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://gimoguvi.ru/strik?utm_term=jbl+flip+3+waterproof+rating
    • https://cdn.sqhk.co/fepogosu/heEhcif/nonifixurinawevanijuru.pdf
    • http://dkmz3.club/sutukukuranikkkjd6.pdf
    • https://cdn.sqhk.co/tavedikovo/WdNhgXr/526167832.pdf
    • https://cdn.sqhk.co/kakezesarop/idhjPxx/easy_piano_melody_songs.pdf
    • https://cdn.sqhk.co/gusisitixinu/dRLhj01/troll_face_quest_horror_3_online.pdf
    • https://cdn.sqhk.co/mofijovelu/ZD0IhdY/kiss_video_whatsapp_status_download_mp4.pdf
    • http://sukujugonada.22web.org/form_arcosanti_instagram.pdf
    • http://hookup157.online/rpn_calculator_for_android_phonerate4.pdf
    • https://cdn.sqhk.co/wozobifanu/iiiahf1/rumble_in_the_bronx_hd_stream.pdf
    • http://prequester.online/the_richest_man_who_ever_lived_freetym5m.pdf
    • http://nukels.xyz/hotel_booking_apps_for_androidvawrq.pdf
    • http://antileqphh.site/nero_burner_full_free5jp2r.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dibedamoka/calcio_streaming_androidaba.pdf
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_ec8429df7bf64b17b146b99dfd6dd4a0.pdf?index=true
    • http://dutagewenurodub.epizy.com/entrepreneurship_development_question_paper_bangalore_university.pdf
    • http://mujozitovisiwud.rf.gd/lumenupolejubibito.pdf
    • https://f61a8d15-835b-4c36-a3db-e4ead73ab13f.filesusr.com/ugd/e9f5f3_55ed1df418f54ed58588d24c7be5b3f1.pdf?index=true
    • https://466f9527-ada3-48b4-ac0c-4ba5546996ca.filesusr.com/ugd/a4b6b9_b5a0de80138a42fcbcc7a8983201b62f.pdf?index=true
    • https://s3.amazonaws.com/kefefetafij/garmin_rino_650_update.pdf
    • https://6448a590-b571-4b71-a9e4-820b8531b153.filesusr.com/ugd/782be2_89dc6ed2c7d04543a951e785a871407f.pdf?index=true
    • https://s3.amazonaws.com/vifusupegiza/kakunevopufizo.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f439.bin
1213c2f2c0c3ad391280025c781f8b061cca342077be987a443187f5b8af20a9
pdf-font-stream PDF embedded font (sfnt) at offset 0xF439 5276 bytes
font_01_sfnt_off00010652.bin
cb58e7b7b4e2b6d31b09067358e8e69a77f0a2d97edf7b3cf130f8cef3672f49
pdf-font-stream PDF embedded font (sfnt) at offset 0x10652 11596 bytes
font_02_sfnt_off00012dc9.bin
dc54f3ff3800a9b7ac4db692fd53a838a0e5ec7ae9a102aadfa0e8b85b3efd48
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC9 16516 bytes