Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae54d1aa0609b95c…

MALICIOUS

PDF

74.6 KB Created: 2021-02-09 22:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d54683fa7c1f5e1a667b3a3beb388ba0 SHA-1: 88b58397599c62b4eeb29178b31eb4caac4724b7 SHA-256: ae54d1aa0609b95c3458ef4de3e82b15f8908378680c3b8183ad52680c3b4d25
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=android%20bitmap%20from%20vector%20drawable PDF link annotation
    • https://cdn.sqhk.co/xixujipum/1Btidib/car_hill_racing_mod.pdfIn PDF document text
    • https://bukivobiwizu.weebly.com/uploads/1/3/4/0/134097020/gutuvozuruvamu.pdfIn PDF document text
    • https://ronupajowosoza.weebly.com/uploads/1/3/4/8/134871490/1405166.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/kyijf3h/98172722198.pdfIn PDF document text
    • https://datokusowijodo.weebly.com/uploads/1/3/0/7/130776434/2d1efc9bb7.pdfIn PDF document text
    • http://azorocheat5.xyz/industrial_revolution_inventionsl3z4u.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/jhmneSr/22862944857.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386591/normal_5fc66e898238f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477638/normal_600a4bea5e4a8.pdfIn PDF document text
    • https://wamurereleveti.weebly.com/uploads/1/3/5/3/135392703/9151824.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/ehfxAji/highway_crash_derby_mod_apk_1._8._01.pdfIn PDF document text
    • https://bijejumutitin.weebly.com/uploads/1/3/1/4/131454352/tugesusuxazod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447663/normal_5feb0a22a51a1.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/kotenu/32296796318.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/40446842154.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_off0000e4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C9 5404 bytes
SHA-256: afc49b0626faf551ccb9e2527e775aa890a62d4bf4173e75dc8d65e9a7266706
font_01_sfnt_off0000f728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF728 11180 bytes
SHA-256: 1a5e36fdd9b375ed7499aac8c728ddaef93f9feb2e77f660c4a9f08c478ecf43