Malicious PDF — malware analysis report

Static analysis result for SHA-256 301a0f59d6158f76…

MALICIOUS

PDF

69.4 KB Created: 2021-02-18 06:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 34997064bdc30f998ffb93c2696788f3 SHA-1: 840f44f503864c423fcbdfb28d06fa8510daa24b SHA-256: 301a0f59d6158f76155199548d93f099a7f6d80faae18a10eac692f36946ee10
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://baarspo.ru/123?utm_term=philosophy+the+power+of+ideas+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476268/normal_5ffe2736e1178.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/P3jhge9/45919531860.pdfIn PDF document text
    • https://puriruwuz.weebly.com/uploads/1/3/5/3/135395363/kegiti.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/OjaqNjg/komofinok.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/ifEpkif/98900672863.pdfIn PDF document text
    • https://cdn.sqhk.co/vivupedasez/hegiQgd/mcdonalds_breakfast_start_hours_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/gdLgjDo/96692595001.pdfIn PDF document text
    • https://cdn.sqhk.co/sazobenapur/iS2jhxQ/green_pepper_recipes_vegan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388825/normal_602251a77f27b.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/jdnhiYr/77598050765.pdfIn PDF document text
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/4680184.pdfIn PDF document text
    • https://cdn.sqhk.co/molavagew/j9igjwj/hill_climb_racing_3_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/1jjd41G/kajoxizuv.pdfIn PDF document text
    • https://cdn.sqhk.co/zosurinipin/j2ggBic/nizuduxebadem.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/fifuto/rofikasinam.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_off0000d1e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E1 5324 bytes
SHA-256: 67cec9f777a0bc5f9c96fb1f8d1ac2000e3e222b457aba707e98cde24ee2d76e
font_01_sfnt_off0000e40d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40D 11092 bytes
SHA-256: 629bb4472a39964ad3b191010f5df2a7ebc3d70d9bc16b3e52e5dfb337b9d8ce