Malicious PDF — malware analysis report

Static analysis result for SHA-256 0598342d3096b5ea…

MALICIOUS

PDF

64.3 KB Created: 2021-02-26 05:39:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2f5631499e47e9822faccbc51568dd08 SHA-1: 7e446b391b8db0ebbfa92aa383ba985dd03ac36d SHA-256: 0598342d3096b5ea6231647d5e00c40284602d9e59d4cc209ba17687b00db718
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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=super+mario+rpg+guide+book PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493553/normal_5fc5a52e26dbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5ff6d32791249.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371265/normal_5ff6537701714.pdfIn PDF document text
    • https://nibovipuduri.weebly.com/uploads/1/3/0/8/130814681/7427455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476268/normal_600f94400fa16.pdfIn PDF document text
    • http://activa-fb.com/niferegotiximerijazunori0fxnj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419235/normal_60011d683e68b.pdfIn PDF document text
    • https://xufujume.weebly.com/uploads/1/3/4/8/134851049/rapepikax.pdfIn PDF document text
    • https://fowaloxew.weebly.com/uploads/1/3/4/8/134881160/7536257.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/wixamupelinere/74037676163.pdfIn PDF document text
    • http://jetubomubiko.epizy.com/acuerdos_de_paz_en_guatemala_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/cbs_sports_fantasy_football_rankings.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/ontario_beekeeping_manual.pdfIn PDF document text
    • http://seweromovipuse.epizy.com/python_3_basics_cheat_sheet.pdfIn PDF document text
    • http://jadaxanesutav.epizy.com/11561809344.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/hbr_after_action_review.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_off0000bf72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF72 5376 bytes
SHA-256: 00e6690f6e9f52fc6a22093c53affd595c5e48d0bf0c56d80d41e19d14932963
font_01_sfnt_off0000d1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A0 10208 bytes
SHA-256: 8622a4b2fa8b83dabb58a627eec2b6f6bf0214e1aea9c9b71c51a5e9c3855f8b