Malicious PDF — malware analysis report

Static analysis result for SHA-256 607d893600946c24…

MALICIOUS

PDF

69.6 KB Created: 2021-02-22 03:34:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8d53b0359d7388bcc05feed9dd3805b8 SHA-1: 7f001146339d46149c57846d489c69ef07afd800 SHA-256: 607d893600946c24acf1d39d7f87b64c01911876ddb4e911de7b24cc016de256
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/strik?utm_term=can+you+make+a+watch+water+resistant In PDF document text
    • https://static.s123-cdn-static.com/uploads/4392237/normal_5ffabecb3b7e1.pdfIn PDF document text
    • https://cdn.sqhk.co/razotefo/giWuhgS/dhoom_machale_dhoom_2_song.pdfIn PDF document text
    • http://xploitcrew.io/mario_benedetti_corazon_corazay7ize.pdfIn PDF document text
    • http://save50.pro/8320767677k4nbc.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/3giHjeA/kabope.pdfIn PDF document text
    • http://mamajan.space/end_sheet_bookbyq27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_60109d5276e4b.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/jjdTibs/fiat_maximum_care_warranty.pdfIn PDF document text
    • http://navalny.design/350662443073ef2v.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/vHhiwjd/727143803.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385853/normal_5ffa8a1d872cf.pdfIn PDF document text
    • https://cdn.sqhk.co/buzomesil/ehfRXig/87459237311.pdfIn PDF document text
    • http://wusujobarowi.22web.org/d_d_5e_guide_to_ranger.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rufazigivemebod.rf.gd/89737613417.pdfIn PDF document text
    • http://rovuwuruw.epizy.com/96475345315.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_off0000d38f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38F 5172 bytes
SHA-256: 140ca8148a36be9a95a51c7fa77511116757dfb4bd089d3220cc3bc32d9c3a67
font_01_sfnt_off0000e50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50F 10804 bytes
SHA-256: 983738cb2a336b8dc77d7c51314afae6079fe8ae864da317f020cef98e3d810b