Malicious PDF — malware analysis report

Static analysis result for SHA-256 783804bab05a4256…

MALICIOUS

PDF

40.5 KB Created: 2020-09-18 14:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3f8ed23a2cf50ab6c8d54244c404223 SHA-1: 5be297461391682e9d23917090ea6c5587e69c60 SHA-256: 783804bab05a42562e5cd9011e7ffc5622e4840d9c4f2668543297c1cfe7672a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, including a primary link to 'ttraff.club' which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a 'reproductive system matching worksheet answers' lure, suggesting a phishing or malware distribution attempt. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to distribute malicious 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.club/wix?keyword=reproductive+system+matching+worksheet+answers In PDF document text
    • http://toboxiwot.nevadateach.com/uploads/1/3/2/6/132682076/kagat.pdfIn PDF document text
    • http://files.floridalivesound.com/uploads/1/3/1/4/131452799/60457dcb62.pdfIn PDF document text
    • http://files.ahandymommy.com/uploads/1/3/1/0/131070458/9684992.pdfIn PDF document text
    • http://tuxosoxe.rami-khushaba.com/uploads/1/3/2/8/132815370/zumofulaxa_lekikasixu_kosofane_dukojuvemakudiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6005bf7a-db45-4088-8cf3-497ad5a42d5b.filesusr.com/ugd/0cd019_0adf2a324b4a44dda790ec5c9d7fbe51.pdf?index=trueIn PDF document text
    • https://999c9b6c-4014-4720-8140-325b992f2f04.filesusr.com/ugd/08338c_0f42e8858bef4d8f9e917232f6c304cc.pdf?index=trueIn PDF document text
    • https://add3c6fe-da64-4d98-a4de-cb951288161b.filesusr.com/ugd/7d2910_e6d42b4ff8bb46ec8bbadece376e343f.pdf?index=trueIn PDF document text
    • https://3c2cc2cc-ea17-46d9-9b8d-89b3ca6a3c01.filesusr.com/ugd/29c71c_96f08a0f6d964a1e88730d016356b723.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4139/0492/files/farberware_deep_fryer_instruction_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/pekekojuwapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/51818996797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0559/9140/files/26505421692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/tevojozizotudekodowake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9843/4461/files/chronicles_of_the_third_realm_war.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 5

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_off00005d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D13 5780 bytes
SHA-256: 4456865510d92dd3651d5025503edaa12930d43ade41b6c970207f2befdc24ab
font_01_sfnt_off000070b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B5 10460 bytes
SHA-256: 66a3d746b801409903cf45797d9349e7f892733344a4bec96417956907e453e9

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