Malicious PDF — malware analysis report

Static analysis result for SHA-256 426b12baa2e07235…

MALICIOUS

PDF

65.8 KB Created: 2020-08-12 04:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 847e1cead665e2c9ab12d2a78382f036 SHA-1: b2e7cce8ca195bd070a26c0190e21681f0183e90 SHA-256: 426b12baa2e0723586f3e170ceb72ca6bed3b6c856b72ce2cf2c8956f1d05d4f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate documents, but one of the primary links redirects to a known malicious infrastructure at ttraff.ru. This suggests a phishing or malware distribution attempt. The document body itself is heavily obfuscated and contains the malicious URL, further indicating its role in directing users to harmful 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=is+95+cdma+architecture+pdf In PDF document text
    • http://files.ctk.net/uploads/1/3/1/4/131408899/ce54fb0.pdfIn PDF document text
    • http://files.artwalkstalbert.com/uploads/1/3/0/9/130969712/6451970.pdfIn PDF document text
    • http://files.robhightonart.com/uploads/1/3/1/4/131437017/6214203.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/1/0434/8982/0836/files/lexical_meaning_murphy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/86465948507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0077/2246/files/36077571609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/58058377749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/3069433643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2744/8476/files/bekozigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8761/7447/files/gozinorasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/49649854493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1124/3164/files/58603771693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/62246159925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/lasuvumekakulezitiwabine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/2015_toyota_corolla_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/certificate_of_work_experience.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/discord_overlay_obs.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FEF 8048 bytes
SHA-256: 47545881093d22349e880aa418f3dfbb3d036cff1881907332ef7be843b1c4dd
font_01_sfnt_off0000bb1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB1F 5580 bytes
SHA-256: 151be7ce97b34b543dc48e0289b15488292df857bb4524508abb87b546e1dff2
font_02_sfnt_off0000cdea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDEA 13720 bytes
SHA-256: 2c938b8db77da9c1a5ef98d5d911754907b5444855bc50e115944dedb1db227b

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