Malicious PDF — malware analysis report

Static analysis result for SHA-256 007ab31003263d6c…

MALICIOUS

PDF

81.2 KB Created: 2021-02-21 12:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66f3bceb9c586ea015319a9fb74cbcec SHA-1: facee0f247c99fd705f279e9d338eeb70d49e429 SHA-256: 007ab31003263d6cdeab778ae82d763cd5442b93c371587cb8d6ff022bab17ae
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=goldilocks+and+the+three+dinosaurs+reading+level PDF link annotation
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/77f62cd95804bd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422144/normal_60112b4bca533.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/ohdgfhi/gravity_sky_lounge_harga.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/xISpgg4/evacuated_solar_tubes_nz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379498/normal_5fc9f7850ae6f.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/GgdqgcA/classing_meaning_english.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_6030a67ead8ba.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/dnidTja/48070851301.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498376/normal_5ffb6a0e577c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460243/normal_5ff25d3221553.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/aU3hgie/christmas_hair_salon_2nd_street.pdfIn PDF document text
    • https://cdn.sqhk.co/kezavilageg/dmijz3S/cystoscopy_bilateral_retrograde_pyelogram_cpt.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/WjhJvnv/97469734593.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450042/normal_5ff8e3e52779d.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/jcgiegh/ping_pong_paddle_and_ball_cost_1._10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10090 5356 bytes
SHA-256: 68f07b2d04b4ec39d121bf0921a903f1cecabf46b549694ce71b83183e26c0d7
font_01_sfnt_off000112cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112CC 11060 bytes
SHA-256: 3d2ba7662857823da0432bf928682f39a8897177190f23f35b9022cf6f06fc76