Malicious PDF — malware analysis report

Static analysis result for SHA-256 725109ca839e826f…

MALICIOUS

PDF

66.6 KB Created: 2021-01-25 09:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 948bd5058c6e935b3a2939f1f3df3116 SHA-1: 00e147f00e19071eaeea0b7488e0de93b9520362 SHA-256: 725109ca839e826f45b2d0d32b6e39b0d5fb78d3b68061384183e5922bf7a14b
164 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it contains multiple suspicious and invisible links pointing to various domains, including 'managerprogram.live' and 'traffine.ru'. The PDF's structure and the presence of numerous external links suggest it is designed to redirect users to malicious websites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9715

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://traffine.ru/aws?utm_term=joint+pdf+matlab+code PDF link annotation
    • http://dorightschool.com/paint_by_numbers_puzzle_gamen2uog.pdfIn PDF document text
    • http://trikolor.site/mountaineering_terms_and_definitions5uhr0.pdfIn PDF document text
    • http://com-signto5.xyz/skylanders_academy_season_3_episode_139yc4d.pdfIn PDF document text
    • https://cdn.sqhk.co/rutunidosaw/Ghfigja/game_jungle_bubble_shooter_mania.pdfIn PDF document text
    • http://xxlmature.site/jejedubijcxy.pdfIn PDF document text
    • http://kamini33.ru/56896960162sfcf6.pdfIn PDF document text
    • http://mimasajikataza.iblogger.org/60633856595.pdfIn PDF document text
    • http://czecheducation.space/domino_s_delivery_pizzahyewu.pdfIn PDF document text
    • http://sokolov.fun/clash_of_clans_hack_free_coc_gemsenv8q.pdfIn PDF document text
    • http://mangalvpodarok.ru/yellowstone_national_park_camping_rulestiyez.pdfIn PDF document text
    • https://cdn.sqhk.co/jalixuwefes/if9Xhdz/planetside_2_factions_pros_and_cons.pdfIn PDF document text
    • http://managerprogram.live/merge_dragons_wonders_sellhm2xr.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/djdgf2X/sync_mobile_chrome_with_desktop.pdfIn PDF document text
    • http://greyfruit.space/pencil_in_spanishpm3ox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maviwapas.epizy.com/tosuto.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC3 5156 bytes
SHA-256: 7048cdc0d2c5c7e30fcc78281b980b100793b785a523344f0435c052106a8bf1

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