Malicious PDF — malware analysis report

Static analysis result for SHA-256 66cc4df837806e52…

MALICIOUS

PDF

70.4 KB Created: 2021-02-23 02:37:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cc57c6c0a29a42a0c01f7f5f36437c1c SHA-1: 34183f9ac1483623fd57028d016fa8d121f12235 SHA-256: 66cc4df837806e525983ca4f71a545cebcf061d65a5441157a43d33711871016
126 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
  • 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://jottigo.ru/wix?keyword=electronic+battleship+advanced+mission+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420592/normal_601ae0de1d1ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404740/normal_601b7b07b6531.pdfIn PDF document text
    • http://jotepuxigavof.iblogger.org/burdened_with_crossword_answer.pdfIn PDF document text
    • http://samettemiz.xyz/jivoworozoso9y1h2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383795/normal_5fd5f4118c6e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495402/normal_601e090f5759b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388815/normal_602dac9c746ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_60289c42ae757.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5feaf27febf70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382773/normal_5fe52ba101b14.pdfIn PDF document text
    • http://vinnipoh.fun/casio_g_shock_stopwatch_instructions9azct.pdfIn PDF document text
    • http://xuzevofut.22web.org/restaurant_employee_handbook_template_word.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390642/normal_602598e855e27.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dazovox.rf.gd/71983560975.pdfIn PDF document text
    • http://kikexufan.epizy.com/clyde_river_fishing_report_vt.pdfIn PDF document text
    • http://sidegiri.epizy.com/amarilli_mia_bella_baritone.pdfIn PDF document text
    • http://kusegewamuzazod.epizy.com/how_do_i_use_the_maytag_quiet_series_300_dishwasher_not_draining.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_off0000d715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD715 5468 bytes
SHA-256: 72557459115425713904e1cf172da5f9cc5e6609c62f42154b00894fb2993bbb
font_01_sfnt_off0000e98a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98A 10152 bytes
SHA-256: e9e9f0065f772f1eef0153332afc5e199db6b64db6cc5e56f6121b9c59c92665