Malicious PDF — malware analysis report

Static analysis result for SHA-256 59bad94e97c327fc…

MALICIOUS

PDF

69.7 KB Created: 2021-02-25 23:34:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ae2251b6473924132145884fe635874e SHA-1: b0660511a6d1d5ee804c0e8a582858b9d17707c2 SHA-256: 59bad94e97c327fc7f9fd5e26d2eb30fcddafd4bcae2d7c3966cab5d1a9adea2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=fossil+q+explorist In PDF document text
    • http://lozebakumod.22web.org/samsung_tv_series_6_have_bluetooth.pdfIn PDF document text
    • https://cdn.sqhk.co/pejemomet/jgibtgi/pee_wee_herman_big_adventure_truck_driver.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5fcb8facbfa12.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/WFih3gc/60460837322.pdfIn PDF document text
    • http://desokore.medianewsonline.com/probability_problems_with_answers.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/ritetemp_programmable_8022c.pdfIn PDF document text
    • http://4gusevshop.space/peditezjr2m.pdfIn PDF document text
    • https://cdn.sqhk.co/natokaze/RigjfSH/unicorn_photo_editor_apk_2020.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/noximogiwunok.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipufo/rianijz/sports_heads_soccer_2_hacked.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/hehgkjj/world_cup_qualifiers_concacaf.pdfIn PDF document text
    • https://cdn.sqhk.co/semobisugigi/jjgeyjc/fexig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kesobiw.rf.gd/female_bodybuilding_diet_plan.pdfIn PDF document text
    • http://bojonovaja.rf.gd/31048490474.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/wevowogokiv.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_off0000d5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AC 4752 bytes
SHA-256: b2f3a48084659455553b8bde338d2f7021f9ad942c7a2c1f129f5462783f6c8e
font_01_sfnt_off0000e5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F3 10716 bytes
SHA-256: f116ac7d4fb75c24075d62996b69ddf4d35e8d875c14c4659e9f26ca80218ba5