Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fb20080a3eeb43…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 05:19:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 975da6aa4a21419dc53f27bda201fe93 SHA-1: f59aa37fb286fec41df69f2dc6b2f58a52748aa9 SHA-256: 15fb20080a3eeb43fb16f61bc3e24c53574c30b862642fa78af1e504b3f521cc
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/pify?keyword=carcinoid+syndrome+ppt'. This redirector is likely used to funnel victims to malicious sites for phishing or malware delivery. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to obscure the malicious redirect.

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=carcinoid+syndrome+ppt In PDF document text
    • http://zusulevit.christophergennari.com/uploads/1/3/1/4/131437092/kibetimumubube.pdfIn PDF document text
    • http://files.monmatgrp.com/uploads/1/3/0/7/130739188/doxazigelexeso_vejez_nolokujowupovi_detuba.pdfIn PDF document text
    • http://pugat.hillsidehavenwii.com/uploads/1/3/1/3/131383943/8562274.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/1/0437/2735/6056/files/36672209549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/ssb_stenographer_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2843/7399/files/dividing_monomials_worksheet_8-_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/wepeturositikivixolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/92839697285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9887/9640/files/11797799333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/jijodajikavadoxilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/believer_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/94194077396.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 4

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_off0000697b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697B 5192 bytes
SHA-256: 5c310b56808b40eb49f174997678c25203aeda500c5c1bd8dc221c1ebff9cb27
font_01_sfnt_off00007b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B11 12120 bytes
SHA-256: 0fbb6181c4c7daa684f6809e099d23e4c8136dc1a432c135476b938ce452dd49

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