Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b19207446d8e1bf…

MALICIOUS

PDF

42.9 KB Created: 2020-08-18 19:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28a4ed33badd50cb7b7bf679d2ddf1a5 SHA-1: 6bead1ba446f2cf5380d7c8c7df992d46950dc73 SHA-256: 0b19207446d8e1bff75883db34b4185957c5c49a34fdb45be9808ba066a0222e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body and heuristics indicate a link farm designed to trick users into downloading files, likely as a phishing or malware distribution scheme. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=ceqa+guidelines+book In PDF document text
    • http://files.solalpine.com/uploads/1/3/1/3/131379540/xaraxepavafib_nowefunumev_wenow.pdfIn PDF document text
    • http://fumik.apaturabeads.com/uploads/1/3/1/3/131398020/4ab2f38ea5.pdfIn PDF document text
    • http://files.britanniahomeservices.com/uploads/1/3/1/3/131382841/9556325.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/1/0431/0266/6914/files/all_star_superman_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/2650264901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/94923044480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2199/1079/files/print_all_files_in_a_folder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/fimusodifagewedowil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/gewikuxisamesesifapovuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9508/4452/files/pdf_annotator_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/pexuzomebogubix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/77489422393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/purupemijafonofawifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/medical_applications_of_nanotechnology.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 3

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_off00006765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6765 5132 bytes
SHA-256: 678b2dfff04fa6d7250b39b4501f2d9ce227563cc0d0022265e84fe0b84f581e
font_01_sfnt_off000078d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D8 11072 bytes
SHA-256: d9921ecfc4044516adfdac2e21b77c0de5255a3a1f8d4936b61d78bf693ea6b6

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