Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bc9e0828db16e4…

MALICIOUS

PDF

77.8 KB Created: 2021-06-10 19:04:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d272ffb27ae2b212b0779f39a07973a SHA-1: e2e5e5e00ef851ad60bf849e147eb467fa7db9d3 SHA-256: 47bc9e0828db16e46e3930189bd8060b2fb352d92e4ccef86cba886c47721a81
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous embedded links, with one prominent URL pointing to 'crysiq.ru', suggesting a phishing or malware distribution campaign. The presence of many links on disposable hosting services further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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
  • 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://crysiq.ru/pbw?utm_term=last+day+on+earth+survival+weapon+mods
    • https://sojuvamufivuleb.weebly.com/uploads/1/3/0/8/130874470/779813.pdf
    • https://cdn-cms.f-static.net/uploads/4366947/normal_604610ab5e801.pdf
    • https://cdn-cms.f-static.net/uploads/4454824/normal_60662e6493f0a.pdf
    • https://cdn-cms.f-static.net/uploads/4501996/normal_600c472baef7a.pdf
    • https://gulekizusivo.weebly.com/uploads/1/3/5/3/135392766/xirowovuwupizabimov.pdf
    • https://cdn-cms.f-static.net/uploads/4412768/normal_5fe9d0225a07c.pdf
    • https://sobolone.weebly.com/uploads/1/3/0/7/130775045/7370724.pdf
    • https://xisaluzesa.weebly.com/uploads/1/3/4/6/134602292/josumon-poridezot-gawebos.pdf
    • https://static.s123-cdn-static.com/uploads/4476943/normal_5ff507f0788fd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://demopefo.pbworks.com/f/hensuki_light_novel_download_free.pdf
    • http://gibuwodebu.pbworks.com/w/file/fetch/144490983/85142831943.pdf
    • http://visetululiv.pbworks.com/f/rabugesedumekexawuna.pdf
    • http://liguduper.pbworks.com/w/file/fetch/144451161/furewekizikox.pdf
    • http://joxakuruvi.pbworks.com/f/81471319829.pdf
    • http://xofitesu.pbworks.com/w/file/fetch/144946476/31420068467.pdf
    • http://demopefo.pbworks.com/f/comment_faire_pousser_les_cheveux_crepu_plus_vite.pdf
    • http://lifuzopa.pbworks.com/w/file/fetch/144887604/email_links_open_in_chrome_instead_of_outlook.pdf
    • http://jijagenaneke.pbworks.com/f/how_do_i_perform_a_hard_reset_on_my_iphone_11.pdf
    • http://vogituvu.pbworks.com/f/free_video_wallpaper.pdf
    • http://lomubel.pbworks.com/f/23140867176.pdf
    • http://jesababa.pbworks.com/f/laninasokaxepalisutu.pdf
    • http://wirajudukim.pbworks.com/f/70282363964.pdf
    • http://redelaw.pbworks.com/f/signal_processing_first_james_h._mcclellan.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_off0000f23a.bin
950c6853d86f7973808b72bfcf88d2be4c6db1a5c01cedca01a28233ad2d76ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF23A 5392 bytes
font_01_sfnt_off00010485.bin
4e38bac22273609afcde7a837b0afa8fc5f88d5c7a05940feca31851789004aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10485 11184 bytes

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