Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd5f1e26fb6f22ff…

MALICIOUS

PDF

46.0 KB Created: 2020-08-16 10:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bb993be8eb2ec8ce844fb355c375544 SHA-1: 8e0ae9fb73a0c67be87d703245c41c378b32c175 SHA-256: fd5f1e26fb6f22ffc311f72fc2be99f3dfd36586e7d780a4eff9fa39a4b3a542
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 with a seemingly benign keyword related to educational materials. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent appears to be redirection.

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=daily+5+lesson+plan+template+kindergarten In PDF document text
    • http://files.todayhousing.com/uploads/1/3/0/9/130969243/vanamogukalazak.pdfIn PDF document text
    • http://files.todaysteachingtools.com/uploads/1/3/0/7/130776714/6503567.pdfIn PDF document text
    • http://files.actacoustics.co.uk/uploads/1/3/1/1/131163788/nitogozemux.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/1/0430/6550/8002/files/mulopibogebogonom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/xipetijofixoxuvibavufub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/27572184984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/2020_calendar_week_wise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/evowars._io_mod_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1814/1341/files/ketaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/kutujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/13787749388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9906/1408/files/git_rename_branch_local_and_remote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/psychology_quotes_about_love.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CC 5568 bytes
SHA-256: 731901bf3d3c17fbedd231c59baa262e2a715be9bd0c2faab108d4eae5d1b30f
font_01_sfnt_off000088b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B4 10176 bytes
SHA-256: df10bebe0acd4206655bae09f56ad30dd42ce929d5d2cde355d4e13d70796c8d

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