Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80c13a18b5cc504…

MALICIOUS

PDF

71.9 KB Created: 2021-02-17 04:48:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 95c53bf8c06d5489cc483610b6b3bcfa SHA-1: 236ddc63a3ddca6ab1b90f5ec978b454798ffaec SHA-256: a80c13a18b5cc5045516b917e1b4bc39beae847a5929aef844a6a46bfc59d0e2
194 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
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=cell+structure+and+processes+crossword+puzzle+answers In PDF document text
    • https://cdn.sqhk.co/fanoxozowupe/idHihhj/68042033738.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/tggRcgh/55633860303.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476924/normal_5fcd1846cb73d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459777/normal_5ff6548ea10d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366381/normal_5fccd4f7ca929.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450636/normal_5ffe28396336a.pdfIn PDF document text
    • https://cdn.sqhk.co/dugubupa/difjeKs/69914128325.pdfIn PDF document text
    • https://cdn.sqhk.co/kedezoge/m4ia6h4/sims_4_mobile_no_verification.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/ihHjagc/21188856085.pdfIn PDF document text
    • https://cdn.sqhk.co/zabitokepum/zggo3r5/danger_dash_run_java_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381964/normal_5ffb85c4ae49d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381534/normal_600fcac47340e.pdfIn PDF document text
    • https://cdn.sqhk.co/fusexabuvej/i8Bgdid/gameboy_console_emulator.pdfIn PDF document text
    • https://cdn.sqhk.co/vijukifezu/XhbggOd/sidebarinelajedejazozo.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/wunojipu/11421516997.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/tamil_movies_2019_latest.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/biugo_app_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/bernina_bernette_340_deco_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/rubber_stamp_font_with_border_free.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_off0000dc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7E 5116 bytes
SHA-256: d2460826b00a82536ac50410eafe72db444cee1052557220ad7e0b23ac055f02
font_01_sfnt_off0000ee04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 10500 bytes
SHA-256: 9a68d7c44960f69550d56917f8c49e420df49be4edf1a925ab79a9daace357cd

Open this report in the interactive analyzer, or submit your own file for analysis.