Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d35091bf9ed7b8d…

MALICIOUS

PDF

40.4 KB Created: 2020-09-14 01:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00fd59e7123678213d8f496b16f97003 SHA-1: b1ee31202c937e4af23d5f8fcc552cb1fc5f8fab SHA-256: 5d35091bf9ed7b8d19d589339865fae21bde8ce53659ccb25aa22540c5949212
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service that ultimately leads to malicious content. The document body text and heuristics indicate a lure related to a 'Brio beardscape manual', which is likely a pretext to encourage clicks on the malicious URLs. The ML classifier strongly indicates maliciousness.

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://ttraff.link/wix?keyword=brio+beardscape+manual In PDF document text
    • http://sebad.hfglacrosse.com/uploads/1/3/2/7/132740580/3d3ef121e606b5.pdfIn PDF document text
    • http://files.backbonesports.com/uploads/1/3/0/7/130739718/1934647.pdfIn PDF document text
    • http://files.tanyawilliams.org/uploads/1/3/1/4/131437627/selerit.pdfIn PDF document text
    • http://jumikip.springhillmn.com/uploads/1/3/1/4/131452934/vinija.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7266/8057/files/mivixiwifewotaxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/indonesia_business_visa_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/chemistry_a_molecular_approach_2nd_edition_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1376/3235/files/biology_projects_for_class_12_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1230/8637/files/cie_igcse_chemistry_revision_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4078/5062/files/38789390636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4009/3846/files/bronze_tube_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/46448528726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/charli_xcx_video_songs_free.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 5

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_off00006108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6108 5408 bytes
SHA-256: 963050c210e1fac0b96f0a8ddfc4354d74489a5c27fdba66cc549424b68deee8
font_01_sfnt_off0000734f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734F 9948 bytes
SHA-256: 6ce01481f32180f9fbd34581b916a008ba1fd8fc4c1c8c5e7c4eadc4218f5b5a

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