Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd590c3a9d79043b…

MALICIOUS

PDF

38.7 KB Created: 2020-08-21 00:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64ad634c3ba4b95ae5f81e0f0dd7415d SHA-1: 7b6edafdbde5430c0201ce91d1d6057e5691d258 SHA-256: fd590c3a9d79043b3458ad36a40938b1521773e7dee3981a6434e2014eb2f43d
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.com, which is designed to lead users to malicious content. The document body, though partially corrupted, contains text related to factoring trinomials and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further indicates a malicious intent to distribute content via multiple external links.

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.com/pify?keyword=worksheet+factoring+trinomials+answers+key+algebra+1 In PDF document text
    • http://files.samuelfort.com/uploads/1/3/0/8/130813972/b2634e9ee22.pdfIn PDF document text
    • http://files.mrsstoddardsiewclasses.com/uploads/1/3/1/4/131437657/1677181.pdfIn PDF document text
    • http://xipamixe.theedgeofthemap.net/uploads/1/3/0/7/130776257/5931ebc6ae.pdfIn PDF document text
    • http://zodajeme.lynbrookels.com/uploads/1/3/2/8/132816042/f5806bd54642bda.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/1/0438/1884/4322/files/6179018144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/85975266787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5834/8700/files/14139304601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8720/7331/files/jejuredaputajakibeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5339/6647/files/82110386086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/93902569712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/gebevoxalavegerowirexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5600/9111/files/conduct_disorder_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9602/2933/files/nowatibopowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/1332749620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/dotowafubolakadisim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/sewing_machine_parts_crossword_puzzle_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0128/1703/files/the_good_fight_season_4_episode_guide.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 3

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_off00005796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5796 5760 bytes
SHA-256: e893559311ceb062f74b52d56658c57f82e9e93fa53e24e4b6391881e2fec54f
font_01_sfnt_off00006b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B35 9936 bytes
SHA-256: 3800a048b914954c32a41952dc17b5355b6efe1742706a84df6bcce4c28fdb99

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