Malicious PDF — malware analysis report

Static analysis result for SHA-256 98621099e0d6d85a…

MALICIOUS

PDF

82.3 KB Created: 2021-02-23 19:35:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 26329ce85635e19e50af921b5bc9c8ff SHA-1: 731ae7b17b5758af6c94ab76e0691aa1cc81d810 SHA-256: 98621099e0d6d85ae06947d778ae8a17df122747b50b1921273081a7bbbe40cb
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://leonvi.ru/123?utm_term=the+end+of+the+world+news+anthony+burgess+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469640/normal_5fe10c36b7dcb.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/00710bc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451039/normal_5fc5c13db2683.pdfIn PDF document text
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/9024911.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417313/normal_5fc9ffae8f991.pdfIn PDF document text
    • http://ionatr.space/munavujazowa5dbn1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498678/normal_5fdde9667bfe2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413457/normal_60053a8ad669e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372982/normal_5fd1a1a3efb30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368468/normal_5fe293317e531.pdfIn PDF document text
    • https://mosevulex.weebly.com/uploads/1/3/4/8/134860143/duxepurixoluru.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/mikibetiv/list_of_colbert_report_guests.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/french_articles_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/guide_gravures_verres_progressifs_essilor.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/toro_greenkeeper_212_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/action_words_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/gevodewuduwufe.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/american_guidelines_for_diabetes_mellitus.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10444 5512 bytes
SHA-256: 5db1175fef30d49b7cc8b00beceaa99e3a8da9ad694714395ab9ff8025fd8b2c
font_01_sfnt_off0001171d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171D 10804 bytes
SHA-256: f5c90f3bd589df326e15f42f4bce618592a25d9cd91e511a310b704ef7254d10

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