Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ca72c180020a6c…

MALICIOUS

PDF

67.5 KB Created: 2021-02-21 17:48:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2db4185a0fa4bebd0b195da0bae88c26 SHA-1: 38d3ff35bbe378ede1d5a30f6061a8db2232f150 SHA-256: c0ca72c180020a6c78f71ba4e3bf29265a26dabb8ed7418a7c6af1cae25eaedf
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/strik?utm_term=how+to+deposit+money+in+stock+market In PDF document text
    • http://dixurujisefumet.22web.org/8767190364.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/XjaNgdS/best_hashtags_for_followers_on_ig.pdfIn PDF document text
    • http://mnclassis.org/sawexajubagarusivudoxerqwak9.pdfIn PDF document text
    • http://starconflict-game.ru/agt_knife_thrower_2020gdblh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488569/normal_6006f1d041a68.pdfIn PDF document text
    • https://cdn.sqhk.co/kelulegawi/gfPxLge/65562395851.pdfIn PDF document text
    • http://lishop.site/wevaxozafoyzkgr.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/igephim/53610683025.pdfIn PDF document text
    • https://cdn.sqhk.co/pedajobu/jcyihzH/design_home_house_renovation_cheats.pdfIn PDF document text
    • http://pestore.pro/subject_pronoun_and_possessive_adjectives_exerciseskaz70.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://daremafuxabo.rf.gd/sinogemolizox.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/joketamukavaxebewigisem.pdfIn PDF document text
    • http://gefaribabati.rf.gd/jubavefap.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/is_the_jitterbug_flip_phone_a_good_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/23129975351.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_off0000ccbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBD 5408 bytes
SHA-256: e1c1cea4ec255e9cbb1e71131eb10a34cf84114f2eea4d800c4458cd76c00b90
font_01_sfnt_off0000df20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF20 9960 bytes
SHA-256: bc620da07ad445e3673051e801a788aa9c17340e6d3967df5c58db3e17f201db