Malicious PDF — malware analysis report

Static analysis result for SHA-256 660734172fa0c9da…

MALICIOUS

PDF

72.5 KB Created: 2021-02-28 14:38:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a1b08f3e094b27b8166ca1374990646a SHA-1: 939f274f7f9db46ecfe7d42512f44f74897eab22 SHA-256: 660734172fa0c9daaf8e5a73bc725c3dd160bae782986ad178f99e2b686a7fb3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://druttle.ru/wix?keyword=food+roulette+wheel PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374852/normal_5ff96cc551f2a.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/hN0dmTm/scarfall_the_royale_combat_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382429/normal_6024954cb93d1.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/what_is_criminal_law_australia.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/53695516863.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379613/normal_5fe94d4fc60f7.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/mortal_engines_netflix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370540/normal_600626760b443.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/befarekogol/wow_cataclysm_protection_warrior_pvp_guide.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/53066813328.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/teninatezitotivuletevuwil.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/badumur.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/20025793324.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_off0000e196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE196 4572 bytes
SHA-256: 98f7344ff7e634188973d427d215406149c7e258c3216e5a483d7b5085a2df3f
font_01_sfnt_off0000f129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF129 10504 bytes
SHA-256: 4f91bcbec9dec1973b61ee7ca6047693ae377b702a3c182397b60cff1713754e