Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d437ac7acdc4742…

MALICIOUS

PDF

69.4 KB Created: 2021-02-22 11:48:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: aae94bd25f5144b971778658cd6e91b8 SHA-1: 6c014b853eee26b398a030130518646d82f29ca2 SHA-256: 0d437ac7acdc4742355e923114c312c92255acda0c2dbc181a22c673c5c5dcf0
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wix?keyword=8.2+special+right+triangles+45-45-90+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/wafavalufa/fwQJp9l/tank_hero_laser_wars_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wanevakaxuma/hicijjg/lugorukif.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/bgcUheP/raxuzevil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461744/normal_5ff7c1dd81c92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451348/normal_5ff6607f7fcb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476301/normal_60130a801fba2.pdfIn PDF document text
    • https://cdn.sqhk.co/fuludasowipu/utEhgxh/remevemezemelifu.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/82ghlSi/wozoramivotomad.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/dU0ssgc/50106913295.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481509/normal_5fecc25116a72.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/jfjdijs/37083847735.pdfIn PDF document text
    • http://jelolizabuvixi.22web.org/gamunowevijugaxemepekun.pdfIn PDF document text
    • https://cdn.sqhk.co/ratufewebu/bFHNjh1/kewugefesolefesoz.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/hhcHvid/tagokoxivigifem.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/xifabilejilab/33465029330.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/pogil_physical_and_chemical_properties_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/17215749393.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/red_cross_first_aid_training_materials.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/circumstantial_report.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_off0000cd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD67 6156 bytes
SHA-256: 7da01d530c1707ba08cb22cc44f0a71ac1236c83e47df9df940438c5fc6d155e
font_01_sfnt_off0000e279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE279 11388 bytes
SHA-256: 951a2beba1fea8c9644a38335c60b422b9741875ee63585a8a7e0212769b9399