Malicious PDF — malware analysis report

Static analysis result for SHA-256 423e076d7d01ff48…

MALICIOUS

PDF

42.2 KB Created: 2020-08-06 11:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de84b20695f628c935e246a2ffe5393f SHA-1: 47b4fa81b3a4847cfd5e010296b95068c4574fec SHA-256: 423e076d7d01ff48681d15e7ac0f4780e80b727b18ce17d2e674d4fcd727d071
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

This PDF file contains a significant number of embedded links, many pointing to Shopify-hosted PDF files, indicating a link farm. One critical link directs to a known malicious redirector at ttraff.com. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern appears to be the distribution of malicious content or SEO manipulation through a large number of linked PDFs.

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=anything+but+typical+book+pdf In PDF document text
    • http://files.usfencinglongisland.com/uploads/1/3/1/3/131382497/8486255.pdfIn PDF document text
    • http://files.kerryanemonahan.com/uploads/1/3/1/3/131380146/9793808.pdfIn PDF document text
    • http://files.blueridgecoffeecrafters.com/uploads/1/3/0/7/130740586/9a90e38b030.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/1/0438/7402/5640/files/classroom_language_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/vazovexen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4066/7810/files/41171190989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7394/4217/files/advertising_media_planning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/14323049607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/xatewusajakixixovetidojab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/adobe_reader_create_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/tuwodovalived.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/towijunajinawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/brother_2280dw_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/79217319434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2281/9233/files/architecting_on_aws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/rabibesinasoda.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_off0000652c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652C 5436 bytes
SHA-256: 6cec660da92ae99eac0706c66e867cddb8b65bd391405941ebe1cc1166dcc492
font_01_sfnt_off000077c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C1 10320 bytes
SHA-256: a8cd35184e09f4ed2a0c2ac7889d6c4cbce503e43245d2966ed31e1a3cf4e6ad

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