Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3fbdb1c5cbe0c6…

MALICIOUS

PDF

66.9 KB Created: 2021-02-22 13:45:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: df06fbb98e73a7d129fbb9a06e1d6d7f SHA-1: 1044b0cf1ff14985b7170249f3a0258af2ce5082 SHA-256: 1c3fbdb1c5cbe0c64f871e8755c7ef1b028b6ad964ad3508edaa617b17655d08
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://crophysi.ru/wix?keyword=play+dead+zed+2+hacked In PDF document text
    • https://static.s123-cdn-static.com/uploads/4404738/normal_5ff794753e38a.pdfIn PDF document text
    • https://sonikegusu.weebly.com/uploads/1/3/3/9/133997348/naburas.pdfIn PDF document text
    • https://tofujifudaxibav.weebly.com/uploads/1/3/5/3/135326414/3251453.pdfIn PDF document text
    • https://gorixiboxizamo.weebly.com/uploads/1/3/4/5/134589430/7886265.pdfIn PDF document text
    • https://bewimowijukoja.weebly.com/uploads/1/3/4/5/134584545/1995653.pdfIn PDF document text
    • https://rapofureduf.weebly.com/uploads/1/3/1/1/131164295/1271846.pdfIn PDF document text
    • https://cdn.sqhk.co/kokowoxiwi/jfPgh6I/18036894867.pdfIn PDF document text
    • https://cdn.sqhk.co/dosazuleg/ahaEhbG/goxonofo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412151/normal_60153cdd3893e.pdfIn PDF document text
    • https://cdn.sqhk.co/bijininabex/3ji2Aif/kulasumifezufozotu.pdfIn PDF document text
    • http://lenilafifita.22web.org/57749910153.pdfIn PDF document text
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/puzuboxozisudozewon.pdfIn PDF document text
    • https://fekodajitor.weebly.com/uploads/1/3/0/8/130874258/vumezuriwirojig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445114/normal_5fedab8552661.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/dfgfy8A/download_game_cats_crash_arena_turbo_stars_cheat.pdfIn PDF document text
    • https://zetitazafoxiz.weebly.com/uploads/1/3/4/0/134040412/sulowojuxez.pdfIn PDF document text
    • https://cdn.sqhk.co/kogeledewafo/XCFpgj0/easy_funfetti_cupcake_recipes_from_scratch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE2 5100 bytes
SHA-256: b21814d5f413f09b2592e43d6ccad896044ff2a951eedc5e3c24a2d735e7116a
font_01_sfnt_off0000dc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4E 9996 bytes
SHA-256: 096b8bd130e4fbbebfb004754e72ae35a3ffd6d412a8581e0b67a85c7a56072d

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