Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94491f223d067c1…

MALICIOUS

PDF

69.3 KB Created: 2021-02-12 11:31:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 71fecd2e3127425797a74c71957d407e SHA-1: 9d30b6414f3c13ec1b45cd7dc68ca02b7d233919 SHA-256: c94491f223d067c1b296a26f35a42a9ccfbc6b78b47b5dd6633680aa2cfe7554
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://crophysi.ru/wix?keyword=additional+practice+problems+answers In PDF document text
    • http://tricitysikhs.com/elnathan_john_becoming_nigerian_downloade3nv8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528915/normal_5fe962b22eb13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406228/normal_5fcb592847c16.pdfIn PDF document text
    • http://ndfnasg.xyz/9940420907qrela.pdfIn PDF document text
    • http://1xbets-regs.site/51268142374o3xdm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456389/normal_5fe3df132f952.pdfIn PDF document text
    • http://terem.space/roms_para_citra_3ds_emulador_androidtb84o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490252/normal_5ff177c47e242.pdfIn PDF document text
    • http://filmera.ru/buccal_route_of_drug_administrationnrxq9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502439/normal_60262362bcaed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474985/normal_5fe429d51b9eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_5fdad75c4c455.pdfIn PDF document text
    • http://kinoogf.space/437916006012x4ww.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/bidemewufa/motivating_and_upbeat_background_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/broken_vow_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/rudo_acapella_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/48678197021.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/wosojeninivajude.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/81095338964.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_off0000d3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A9 5440 bytes
SHA-256: d70858a787f5ab7b1291584d029669816f1aad0f761d827b4851eec7ab231884
font_01_sfnt_off0000e617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE617 10000 bytes
SHA-256: 194e3523c9631749a6e9cd4d1f6c98ebffff7041d866318d384157d12bd85d09

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