Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68d8626a62982f4…

MALICIOUS

PDF

68.4 KB Created: 2021-01-14 22:05:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 42f39faea315d5f224f9ff26da47a7aa SHA-1: 822cc7ff072f133598ae0f90cf47dd6c446d6350 SHA-256: e68d8626a62982f4baadec110ea67293f01f8935a4f6b9f210ba87cfe1b3d932
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/wb?keyword=dragon%20ball%20z%20super%20goku%20battle PDF link annotation
    • https://site-1168194.mozfiles.com/files/1168194/rizawus.pdfIn PDF document text
    • https://site-1178403.mozfiles.com/files/1178403/84505711777.pdfIn PDF document text
    • https://site-1247335.mozfiles.com/files/1247335/manual_canon_rebel_t3i_espaol.pdfIn PDF document text
    • https://nulivoji.weebly.com/uploads/1/3/4/3/134343303/9aea1bd98d548b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466398/normal_5fa46b5cbc97e.pdfIn PDF document text
    • https://kalabuzamebuku.weebly.com/uploads/1/3/4/3/134339718/sidedoxipe_kefexomize_golemapigopo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5f9213caae9c1.pdfIn PDF document text
    • https://site-1083772.mozfiles.com/files/1083772/66598691688.pdfIn PDF document text
    • https://site-1244934.mozfiles.com/files/1244934/wedew.pdfIn PDF document text
    • https://site-1175480.mozfiles.com/files/1175480/efficient_slayer_guide_osrs_2019.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/rogugagatuf/taxiworezikimenunadavonex.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/pexisejalej.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/17351145848.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/banetiremekerezevolawurov.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/guxezibarexaxevinas.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_off0000cfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAF 5240 bytes
SHA-256: c2189f7d9e153b11c7ff6e116c7910c0a38612e99ff7daca2969160ca6032d87
font_01_sfnt_off0000e19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19E 10324 bytes
SHA-256: 555eb5efa43c1e312d8cfc91221488b8731410572ee2cb56ec6ddde01942d4b6