Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab173fb61353483f…

MALICIOUS

PDF

46.9 KB Created: 2020-08-11 13:25:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d140a8dde71b293de0652ec3038195f6 SHA-1: 6dec023d4b234fff28b5625772af667d42c4569c SHA-256: ab173fb61353483f0cf2f95019565bfe76bd77b996ed44ad625535ab6a1ac29f
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate documents, but the primary link redirects to a known malicious redirector. The ML classifier strongly indicates maliciousness, and the document body, though obfuscated, contains the malicious URL. The presence of many external links suggests a link farm or SEO abuse tactic to distribute malicious content.

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.ru/pify?keyword=golden+rice+genetic+engineering+process+pdf In PDF document text
    • http://files.wcclightingdesigns.com/uploads/1/3/0/9/130968992/biguvagatigobusima.pdfIn PDF document text
    • http://files.thedynamicbody.org/uploads/1/3/0/7/130739951/gajojuvi.pdfIn PDF document text
    • http://vamegazot.sondikakoaukera.com/uploads/1/3/1/1/131164211/pifumosaru.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/1/0433/3617/1679/files/29781905296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5827/0101/files/public_holidays_in_karnataka_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3010/2694/files/ketogenic_diet_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8962/4224/files/15530962154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/rizefalezekopusajixiwofoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/minecraft_mod_on_xbox_360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9371/1261/files/kawizasivogefudojoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/valenanewopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4767/3253/files/68511571118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/35524137478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/active_vs_passive_voice_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9744/7831/files/54258997980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/kexedinasugarukaloworim.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 1

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_off000079b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B8 5144 bytes
SHA-256: 6f2ea0d6712fd5f26a4cfe2581408dd0da538dbaeda8c0caea417cf24d6c2865
font_01_sfnt_off00008b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4F 10312 bytes
SHA-256: 126a98079b0ad6933ab722fa208d8fc6d903dfd8f9a16e8a4fe3c69d349a3b0d

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