Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe7201fc490ba9f…

MALICIOUS

PDF

72.4 KB Created: 2021-02-28 08:02:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9365935bc80fa653cbd408912d3055f8 SHA-1: 1675a9f2a79334378189c157046426c71dc8bc3f SHA-256: fbe7201fc490ba9f353c69eed39336cf7f9bec66a26937a92cb88a1f0cbbbbc6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/award?keyword=javascript+cos+to+degrees PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449603/normal_5fca21b2158ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366639/normal_5fe2f903981d3.pdfIn PDF document text
    • https://wonelapafilujol.weebly.com/uploads/1/3/1/6/131606162/f0064b8bd41c7a0.pdfIn PDF document text
    • https://pajejasebuwosiw.weebly.com/uploads/1/3/0/8/130813778/c867d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420039/normal_602a4d8132bac.pdfIn PDF document text
    • https://fefokepixax.weebly.com/uploads/1/3/1/4/131452923/dabe4ea43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_5fd74847528c1.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/saziwijaxodav/best_blog_templates_free.pdfIn PDF document text
    • http://nakeviw.myartsonline.com/the_lost_ways_book_1_and_2.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/chevy_cruze_hatch_diesel_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/36037669409.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/13089261551.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/sociology_notes_for_upsc_mains.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_off0000e057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE057 5260 bytes
SHA-256: 3ed60809b34a6414bf4458ccec14e47384c171ac0941d35fca6c5887d7ed300f
font_01_sfnt_off0000f252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF252 10116 bytes
SHA-256: 2b6fdef5842131c5c4b626b48a1448a66352fd8b33949be2e99bb7d0e0c9f424