Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df013898b3ffb83…

MALICIOUS

PDF

39.9 KB Created: 2020-10-26 21:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-18
MD5: d998a9a2e77618c5ffb3b4c7ecf2eb97 SHA-1: 9b99c7ff703f8f5a682668b6709c389b94da6178 SHA-256: 6df013898b3ffb83e485988e10772042c5e7ad41a9c8719d281a028b6ac5f61f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?keyword=castlevania+64+manual In PDF document text
    • https://s3.amazonaws.com/tetazino/sekokureratuxinakanuteleg.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/sovesivedapatusutelowasu.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/pathogenesis_of_breast_cancer.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/rutito.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/88c0b126d823b.pdfIn PDF document text
    • https://buxijoxusezo.weebly.com/uploads/1/3/1/4/131483018/zazasifod-kifaso-goduzer.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/634dd37b34e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379718/normal_5f8ffce30c8b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_5f953f66b8a44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f8de8f2af6bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409095/normal_5f93796fd3da7.pdfIn PDF document text
    • https://vejuvofarazaxar.weebly.com/uploads/1/3/4/3/134355137/8163823.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/780967.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/f5938ae993d5266.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/a1eb801738bae.pdfIn PDF document text
    • https://sigozebuxofiko.weebly.com/uploads/1/3/4/3/134372047/dazalut.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/sidobifidetetuvinibego.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/66168580599.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/sosilezokurusekodawive.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/difference_between_gymnosperms_and_angiosperms.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/amulet_book_1_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005e7c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005e7c.bin)
    • https://cdn.shopify.com/s/files/1/0437/2011/4331/files/bisinuruwejapufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3647/2992/files/fender_mustang_amp_owners_manual.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 extracted file (font_00_sfnt_off00005e7c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7C 4944 bytes
SHA-256: 368512fdfa48969d1b0a73707341696df19c1aa53b44582290dfa21dc0f21905
font_01_sfnt_off00006f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F49 10324 bytes
SHA-256: 6c03c6a967dea7ceb4ceb19d399863012dd1381c0156694bcf84c66ee396cb89