Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2b842b15f0d992…

MALICIOUS

PDF

79.7 KB Created: 2021-05-03 17:36:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 859c4944f432f6985e3d4a3a75811f9a SHA-1: 704caf7b1c97db685c199c792fc8292023ac0b1d SHA-256: 6c2b842b15f0d992eaf2e895fdffec2ec0f4067e344c9a07d03a6cd0b354b6bf
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to PDF files, suggesting a link farm designed to host malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/strik?utm_term=is+magoosh+vocab+enough+for+gre+reddit
    • https://cdn.sqhk.co/norowitidot/9jaheAc/ferox.pdf
    • http://pogibofabut.getenjoyment.net/cash_payment_voucher_format.pdf
    • https://cdn.sqhk.co/nogugojuri/7Ggcuie/jejunosorademutige.pdf
    • http://takavejesutep.iblogger.org/icheme_get_chartered_report.pdf
    • https://dosodufixelo.weebly.com/uploads/1/3/2/6/132682620/4989397.pdf
    • https://cdn.sqhk.co/lukulobu/Khi7ghr/guidebook_publishing_reviews.pdf
    • https://cdn.sqhk.co/lukulobu/hghBhgy/soccer_star_clicker_vip_apk.pdf
    • https://cdn.sqhk.co/menasimax/jdjdOii/nextbike_customer_service.pdf
    • https://cdn.sqhk.co/zodavujera/IhbhIgh/e_news_hosts_snapchat.pdf
    • https://cdn.sqhk.co/jixifarit/jjJhfgi/gelajezuvaxixofipozapik.pdf
    • https://cdn.sqhk.co/bebumila/vLZibji/tibokokewozo.pdf
    • http://paxezot.getenjoyment.net/abdomen_agudo_quirurgico_inflamatorio.pdf
    • https://cdn.sqhk.co/savujegu/Uhbjchf/stock_car_racing_meaning_in_urdu.pdf
    • https://cdn.sqhk.co/kuwusemob/Cnjdbf2/international_marketing_notes.pdf
    • https://nodikakubal.weebly.com/uploads/1/3/5/9/135966501/8f5de0de4be2a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://magetamuwunaze.rf.gd/platform_as_a_service.pdf
    • http://bitines.myartsonline.com/raxowibopu.pdf
    • http://posowisame.epizy.com/51202386953.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_off0000f754.bin
788581911106b0e47bafb2c239cfa908c8228bb8518fab4298b28cbd84bdd4a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF754 5540 bytes
font_01_sfnt_off00010a08.bin
09571a63cf55141230a65e43dafbd0484b8f8b61362220d340335bf530c6d3d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A08 11196 bytes

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