Malicious PDF — malware analysis report

Static analysis result for SHA-256 adda9a0e95f156dc…

MALICIOUS

PDF

71.8 KB Created: 2021-02-23 01:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 89f6c687ae17c394584f9cca50edaddd SHA-1: 2e14be0cebd2c878af3c675ec44f57e7aa0b86c9 SHA-256: adda9a0e95f156dcd62b4ff0cc55e7b9e7a1253e245ddf491a5a7a061d094c8e
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/wix?keyword=manual+typewriter+for+sale+near+me In PDF document text
    • http://metalllift.ru/eve_online_magic_145tk7m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474222/normal_60222becd7949.pdfIn PDF document text
    • http://detonic-hypertonie.website/cydia_no_jailbreak_ios_7._1._2uk74s.pdfIn PDF document text
    • http://zathkatow.xyz/bugexv7wgr.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/InaggGd/redream_cheat_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/gdhjfNl/guns_and_glory_mobile_game_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457330/normal_600d5d59714ef.pdfIn PDF document text
    • http://ehaberdevlet.com/kensei_guide_for_honor_201828b42.pdfIn PDF document text
    • http://giveaway2020.info/cbse_board_date_sheet_2020_class_10kq58y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488101/normal_5ff157d57c874.pdfIn PDF document text
    • http://segwaywheelchair.ru/2783982762246sfw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_602e214d22a04.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/44506450242.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/crappie_fishing_report_mark_twain_lake.pdfIn PDF document text
    • http://kametazita.rf.gd/ruperuvemamofija.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_off0000dc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC22 5244 bytes
SHA-256: b27db150538a9e3ca2469d5da7fe80c0bae7d4457367dad313286185d9a870fe
font_01_sfnt_off0000ee0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0A 10592 bytes
SHA-256: dfed08d4daee3b368fd0f7f77f3661b6d32d8659e56d419f898400c3a67fb457