Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6316e8583c30f8d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-25 06:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e80b1047c47ab6432158e730b3363be SHA-1: 63a3a81581f5e4145211ff40346d8c7f6a13e349 SHA-256: e6316e8583c30f8db4922ed9ef85545e7b5f2b842d19b42f8497556da6867f1c
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one heuristic specifically identifying a 'PDF link farm'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites.

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://xezojetit.ru/strik?utm_term=outlander+season+5+episode+1+amazon+prime+uk
    • http://arenaprobet.com/ninja_run_2_game_download7r3sh.pdf
    • http://kopawaruda.22web.org/how_to_spotify_on_apple_mac.pdf
    • http://reduslimitalia.website/52156601696z7y1d.pdf
    • http://prizinsta365.site/57476744295bnoz2.pdf
    • https://xawizavikerid.weebly.com/uploads/1/3/4/5/134525990/535221.pdf
    • https://sopetenoredu.weebly.com/uploads/1/3/5/3/135318191/xafepol.pdf
    • https://takokapaxuv.weebly.com/uploads/1/3/0/9/130968961/kamatupaxu.pdf
    • https://bobujiwa.weebly.com/uploads/1/3/1/0/131070874/4139226.pdf
    • https://todulatewex.weebly.com/uploads/1/3/0/7/130738789/5224b635.pdf
    • https://dasasaperot.weebly.com/uploads/1/3/4/6/134665710/5b8f6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fupisemari.epizy.com/vogupewevuxurero.pdf
    • https://uploads.strikinglycdn.com/files/5a9c3cb2-df70-4cab-843c-4f180c8b8f39/best_6_quart_programmable_crock_pot.pdf
    • https://uploads.strikinglycdn.com/files/6cd3a4ad-a07b-4efa-8d88-51baf02d406c/motorola_mc55_user_manual.pdf
    • http://fimageparoxa.rf.gd/cashier_roles_and_responsibilities.pdf
    • https://uploads.strikinglycdn.com/files/6956e967-ea50-4c90-acbf-8918151688e2/sunaritabodemimeposube.pdf
    • http://zogosotatoz.rf.gd/65638636598.pdf
    • https://4f0754e2-f0c4-47db-826b-83042027646c.filesusr.com/ugd/7a11b0_c081925eb8d8412e9122d5b764a2ec78.pdf?index=true
    • https://1e1f235d-56dd-4976-b20d-d38e3fe7b172.filesusr.com/ugd/210b45_1c2deff2c65f4e6fa72e4487d5f6ecd8.pdf?index=true
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_e27f54402c424679a8318a2954b94619.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3dbfc57e-7d87-4a6a-8a6a-9da87ecc00ca/15217369241.pdf
    • https://uploads.strikinglycdn.com/files/aef6ba58-f5bc-42a0-803a-503e3ac24496/logitech_k520_keyboard_lag.pdf
    • https://9fc80a0e-b25b-4135-afeb-9811a1ea6bf8.filesusr.com/ugd/91e123_b5fa7e2dc9cc4aec8e650d2117ff1206.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_off0000eff5.bin
b605f75a500cdb3996ee0bbabdb2d64ad02d58631a1a6e058008574fb1f3bbcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF5 5420 bytes
font_01_sfnt_off0001025b.bin
0235dfaa76ee3419fe1def82147b882782a186520c0955bc36946d56b10acc18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1025B 11588 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.