Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a6d6de9de4d3d6…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 03:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24713da6a9359bd8a15b602e72181c6f SHA-1: 2f3df3092643f822854fde69b7a73645b242f033 SHA-256: 50a6d6de9de4d3d66c9a995f6a1ec76aec4badb521b602c22df56e260939e432
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body contains the URL https://ttraff.com/pify?keyword=emotional+development+in+childhood+pdf, which is likely intended to trick the user into clicking it. The ML classifier also strongly flagged this PDF as malicious.

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=emotional+development+in+childhood+pdf In PDF document text
    • http://files.199boxingwrestling.com/uploads/1/3/1/3/131381112/xefezejuzegamenonola.pdfIn PDF document text
    • http://files.southernstyledevents.com/uploads/1/3/1/4/131412558/2d2a66e58e.pdfIn PDF document text
    • http://files.joeynewfield.com/uploads/1/3/0/8/130874058/vuzuxubelali.pdfIn PDF document text
    • http://files.lynnwarehousing.com/uploads/1/3/2/6/132696330/wubage.pdfIn PDF document text
    • http://files.westpointclassof1968.com/uploads/1/3/2/6/132681325/xumomonosipevamet.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/1/0431/4352/8609/files/sexanik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/39494864621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/6152863186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/48578165570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56773010908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7087/4009/files/monster_manual_ii_1983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2565/3160/files/los_orgenes_del_neoliberalismo_en_mxico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/wokuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8819/1396/files/jifukezukirisot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/lizos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.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 7

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_off00007343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7343 5136 bytes
SHA-256: 8233f31d8000a5ef4c5075676d37b81ca08ff38cd5b9a5e3874a09cb8efdeacc
font_01_sfnt_off000084a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A6 10020 bytes
SHA-256: c53702b8d8ad06771b14e58ea8c36158414182518ee2288e4953f94ddf25404f

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