Malicious PDF — malware analysis report

Static analysis result for SHA-256 2241f639198c1d3c…

MALICIOUS

PDF

71.5 KB Created: 2021-02-21 02:49:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3f00f005db5a7493cfeebdf3efff0bae SHA-1: 44a54f59ce24119db257bfc484d01b1c48bfb588 SHA-256: 2241f639198c1d3c8194c35ce1f13b667441687ce491e019a778f3cfab9a494e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=compass+test+study+guide+reading+a-z In PDF document text
    • http://leqqurint.online/i_10_traffic_report_near_me8fzvq.pdfIn PDF document text
    • http://portkamesto.site/348607543130qjg3.pdfIn PDF document text
    • http://cocobuka3.xyz/fumigar_para_polillas_de_madera217i2.pdfIn PDF document text
    • https://pomisefinare.weebly.com/uploads/1/3/4/9/134902228/7547986.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/agdIjbq/to_do_list_microsoft_word_template.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/25lKkEo/81791960449.pdfIn PDF document text
    • http://tonivatibiri.22web.org/15922233553.pdfIn PDF document text
    • https://pedigibija.weebly.com/uploads/1/3/1/8/131857049/bivufopo.pdfIn PDF document text
    • https://boseveju.weebly.com/uploads/1/3/4/5/134595203/5812000.pdfIn PDF document text
    • http://wowurilagufa.iblogger.org/how_to_make_beef_jerky_with_a_ronco_food_dehydrator.pdfIn PDF document text
    • https://cdn.sqhk.co/wafixagi/SRVhB8y/north_and_south_1985_free_online.pdfIn PDF document text
    • https://negogepif.weebly.com/uploads/1/3/0/7/130775604/9311796.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/riejcFr/callaway_mavrik_pro_irons_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/a7YGjha/79704285169.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kewumexor.epizy.com/14689235645.pdfIn PDF document text
    • http://rebikesumusosu.rf.gd/outlander_series_book_9_release_date.pdfIn PDF document text
    • http://wuwalumawaj.rf.gd/wodit.pdfIn PDF document text
    • http://duxuramubot.epizy.com/27206248912.pdfIn PDF document text
    • http://jugexuwaluxanem.rf.gd/63149284928.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5E 5336 bytes
SHA-256: 5673fe8de20401fed181368e6eea4306a9bea0f07a28a006caf10ba1ba640e7b
font_01_sfnt_off0000ec7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7C 10532 bytes
SHA-256: af28ac2b4a8b5966eda656be117c494e27137714dd73c9b7a2f8c90611002a98

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