Malicious PDF — malware analysis report

Static analysis result for SHA-256 5edd31e36b4299ea…

MALICIOUS

PDF

34.6 KB Created: 2020-08-24 20:08:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 128acd6cfed347016f6c165b26fae459 SHA-1: 15b3c5ee951f3f3898ba37abfc551e845619ffb7 SHA-256: 5edd31e36b4299ea82a4ff274e76d6c92e34c036f371ddd962a90fd1025e00be
194 Risk Score

Malware Insights

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

This PDF document is designed as a link farm, using a deceptive lure of 'sad girl cartoon images' to encourage clicks. The primary malicious URL, 'https://ttraff.ru/pify?keyword=sad+girl+cartoon+images', is identified as a redirector to known malicious infrastructure. The document contains numerous links, many pointing to Shopify-hosted PDFs, likely part of an SEO manipulation scheme to distribute malicious content. No scripts were extracted, but the embedded links are the primary vector for this attack.

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=sad+girl+cartoon+images In PDF document text
    • http://delabij.andrewjamesinteriorsuk.co.uk/uploads/1/3/0/7/130739640/2263424.pdfIn PDF document text
    • http://files.drjdechert.com/uploads/1/3/0/7/130738823/1ceb79.pdfIn PDF document text
    • http://bivijile.msmorales-chemistry411.com/uploads/1/3/1/1/131163729/5008513.pdfIn PDF document text
    • http://files.bluevista725.com/uploads/1/3/1/3/131379439/nagosinuzefowa-muxaromefaj-petilo.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/1/0437/8276/6743/files/89988541409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/99102041194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1404/4323/files/twitch_how_to_change_stream_title.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2523/5111/files/fafikiruwixafati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/sql_format_amount_with_commas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/kuxevofiloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/makhna_song_mp4_tinyjuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3019/8937/files/68410921400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/72002540180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4764/0469/files/55993969419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/formal_synonym_for_assurance.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_off00004a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A69 5364 bytes
SHA-256: cd1768f32a2fe46ad76dc454328a204d0e61d3bb8789362d5aa7a332f44c0e0e
font_01_sfnt_off00005c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C77 9792 bytes
SHA-256: b0f8f054e4fd167febe4c78d9ec5183296fe822df4acc0567f111fb98ae82db1

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