Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb7acff3e735ba2…

MALICIOUS

PDF

72.9 KB Created: 2021-02-20 06:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fb7cf41c1b9450886b8a8fd4d97caf32 SHA-1: c82cc4d76f7fbc8cd4b17bdccd4021c6bd114bb2 SHA-256: ffb7acff3e735ba257a8b0732ef001cab943863559cd68f1d4ce8f3acb572a6a
126 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
  • 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=threshold+guardian+in+moana PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426822/normal_601e997eb8789.pdfIn PDF document text
    • https://roxuxafuz.weebly.com/uploads/1/3/0/8/130813852/1108340.pdfIn PDF document text
    • https://kevonixoxudunu.weebly.com/uploads/1/3/0/7/130775897/gukekonoguxakudo.pdfIn PDF document text
    • https://jewefero.weebly.com/uploads/1/3/1/3/131383264/9267797.pdfIn PDF document text
    • http://aduo5.online/pixar_storytelling_rulesmeqyu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424010/normal_6002f84a8c7e6.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/gjgOggz/colornet_horror_coloring_books.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/ha6SOih/30221524579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_600e9baee1493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391047/normal_601eaf4dcff43.pdfIn PDF document text
    • https://kosodakugup.weebly.com/uploads/1/3/4/6/134655388/falimuruke.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/bubisifapagefe/gafuvurafudesexawigen.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/browser_vpn_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/business_cards_size_photoshop_template.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_off0000e59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59A 5188 bytes
SHA-256: 02b9bf2cc0901c8beaff538e4477ec868d45d03acb1f2a12068d880fdd16ef37
font_01_sfnt_off0000f70d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70D 9176 bytes
SHA-256: 80a8b09ccf9647ade686b5de883e35367d7ab17c1a0ff1ef957bb4f85a6168cb