Malicious PDF — malware analysis report

Static analysis result for SHA-256 6864f0d08593d06e…

MALICIOUS

PDF

79.1 KB Created: 2021-05-26 18:35:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77c0fdfdd72e6af37caa32b062338382 SHA-1: 5910955bd9e3cd149895a34ead289083ff573d9f SHA-256: 6864f0d08593d06e052c44c07b1185625b1fd3e17a73dab831eb65339306a88c
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate maliciousness. The embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' suggest the document is designed to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://zajinet.ru/strik?utm_term=solidworks+assembly+exercises+pdf+free+download
    • https://vakejijumusefuv.weebly.com/uploads/1/3/5/3/135313512/9094480.pdf
    • https://bojuzogonugux.weebly.com/uploads/1/3/5/3/135304036/lotebabesopam_sisirawodusevub.pdf
    • https://joketivuwotida.weebly.com/uploads/1/3/1/4/131454049/6471782.pdf
    • https://lajofezev.weebly.com/uploads/1/3/4/6/134603150/mudipulesikowigajeva.pdf
    • https://puziwifatewir.weebly.com/uploads/1/3/4/7/134715637/wutirumegoga.pdf
    • https://terifurarogo.weebly.com/uploads/1/3/4/3/134317228/rived.pdf
    • https://nowagomasililub.weebly.com/uploads/1/3/0/7/130775830/lutetom_karezigu_babifin_pixitezekutukuf.pdf
    • https://buwuxebukiz.weebly.com/uploads/1/3/1/6/131606134/8201049.pdf
    • https://bumilumijoxaxuv.weebly.com/uploads/1/3/4/4/134497753/2629770.pdf
    • https://bibawegosisuzu.weebly.com/uploads/1/3/5/9/135961680/xarasefopagelorof.pdf
    • https://tanipodolotuweb.weebly.com/uploads/1/3/4/4/134457000/timobofiz.pdf
    • https://semulojera.weebly.com/uploads/1/3/2/6/132695334/pelepodokarato.pdf
    • https://fiwofufoneronup.weebly.com/uploads/1/3/1/0/131071066/tovagumivomuluka.pdf
    • https://zofoxutugutijor.weebly.com/uploads/1/3/0/8/130874595/0afe340.pdf
    • https://fidejilajusaxe.weebly.com/uploads/1/3/4/3/134363993/xopemi.pdf
    • https://taresazafo.weebly.com/uploads/1/3/5/3/135335901/1eb6bed44.pdf
    • https://radotarurejatu.weebly.com/uploads/1/3/1/6/131607565/tevaridijan.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9ad06041-b41c-442d-a69a-04bd20a970b6/mivolebilogozedanip.pdf
    • https://uploads.strikinglycdn.com/files/ea9a556e-f877-4937-81cd-9df797dc837f/morovurajonikuwejigu.pdf
    • https://uploads.strikinglycdn.com/files/2d2fda96-7ad8-4fb5-a5ea-8e089c86394e/gopro_hero4_silver_edition_accessories.pdf
    • https://uploads.strikinglycdn.com/files/74880dff-e08f-4253-83d6-337d97c60370/b450_tomahawk_max_features.pdf
    • https://uploads.strikinglycdn.com/files/dfa0b0f7-ef6e-48dd-9cfe-1a27ecd2a195/befibow.pdf
    • https://uploads.strikinglycdn.com/files/741c6f16-ff10-4c14-8d91-a4ef1ae83c62/73633873343.pdf
    • https://uploads.strikinglycdn.com/files/cb06faee-a0be-4ed7-b9a5-d740daecc3a8/revista_discipulado_novos_convertidos.pdf
    • https://uploads.strikinglycdn.com/files/60e0e293-c0c3-470d-9296-9bf3d9a090b5/epson_perfection_v550_flatbed_scanner_reviews.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_off0000f71a.bin
2fa8f40856c09ea81906b274c1bced20b75e0e674b96ac74ed521bbaf1253510		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF71A 5872 bytes
font_01_sfnt_off00010b1b.bin
2530589390ff1b481e70360514954e80cbd4bf2259497492fa17c2afcda1451f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1B 10380 bytes

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