Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8d633df3294358…

MALICIOUS

PDF

59.9 KB Created: 2020-08-15 22:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4723e18f182bf03cb4ae6177f9fe97cb SHA-1: c6321125889b0ebccef2d367d3468c89313af63c SHA-256: 9b8d633df3294358ddf2a447713b4f4a6d817a31b01b341b9a68b6155b92d67c
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, disguised as a manual for radiological safety. It also functions as a link farm, pointing to numerous other PDFs, many hosted on Shopify. The primary malicious URL is the entry point for the attack, likely leading to further malicious content or exploitation.

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/wb?keyword=manual%20de%20procedimientos%20de%20seguridad%20radiologica In PDF document text
    • http://towedi.concepts2realities.com/uploads/1/3/0/9/130968931/dde5597077335c5.pdfIn PDF document text
    • http://lujin.sdrm.shop/uploads/1/3/0/7/130776031/01873cbc4f.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/1/0430/2172/9955/files/wefomabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/releasing_your_potential_by_myles_munroe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/munomitezovojope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7917/8142/files/superman_returns_video_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/bixamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/kimukavevun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/14415431488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5077/0342/files/water_supply_and_sanitary_engineering_by_birdie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/voxik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7952/2722/files/acca_f9_kaplan_revision_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/57695635525.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_off0000a823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA823 5396 bytes
SHA-256: c88d0cdd8fb5e8d6413fdf1e0cc2fb3a5dd785580999cba4e5b2837f8adf444a
font_01_sfnt_off0000ba63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA63 12260 bytes
SHA-256: 341f1256568f677be04231659ce7758da43d38e0dc5e7bb79b08fcf8ad6c3f7f

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