Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1011960e7299c4…

MALICIOUS

PDF

71.3 KB Created: 2021-02-25 09:33:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1af37178e60d65dc8992d782e01d585f SHA-1: 14a316bcb4eda2165368c20acede7ff207d58062 SHA-256: df1011960e7299c409fa3884465607dfa13195b9b3b7de99d7f1dd066dc8b4dc
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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/award?keyword=what+type+of+expense+is+freight+charges+on+purchases In PDF document text
    • https://cdn.sqhk.co/dodamewope/hf6igdV/44513167837.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/shbOjah/my_land_matters.pdfIn PDF document text
    • https://jabikazisejifo.weebly.com/uploads/1/3/1/6/131606509/bemawikakudoxif.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/X80jgXj/little_commander_2_tips_and_tricks.pdfIn PDF document text
    • https://diwekivoveludu.weebly.com/uploads/1/3/5/3/135313391/529230209c8df35.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/eienLbm/13295783630.pdfIn PDF document text
    • https://cdn.sqhk.co/jepogedofuz/Sjahjhg/89285020103.pdfIn PDF document text
    • http://wotukujis.sportsontheweb.net/wejizugudidikugejalije.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/pijiipm/aimpoint_pro_red_dot_adjustment.pdfIn PDF document text
    • https://jofovumilaj.weebly.com/uploads/1/3/2/6/132681264/puwosukifuxipa_fuvepedokuko_wogemasijo.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/simokosewavako.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/HfP0jaQ/dipukeg.pdfIn PDF document text
    • https://cdn.sqhk.co/pozuwifofub/EUdjaje/strategy_definition_history.pdfIn PDF document text
    • https://cdn.sqhk.co/gagunewatevo/ihyhd15/cut_the_rope_ball_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/gem_of_the_ocean_full_play.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/does_neurofeedback_therapy_really_work.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_off0000da05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA05 5428 bytes
SHA-256: 973da7fb632b578ae369975a9ffa15ffc17c0617d43bcdde3bda4d3da8cbc78e
font_01_sfnt_off0000ec9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9E 10380 bytes
SHA-256: 4a29305517d4b8446cda8a8e593199dc59c7cab6ece9f0537e206278c574786b

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