Malicious PDF — malware analysis report

Static analysis result for SHA-256 b25ec27fe18acf76…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 15:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4cb399f823eb9eb6c40edabb06cf2892 SHA-1: f23eaad07911e08b9f9de1be1f065b539b0bf0f0 SHA-256: b25ec27fe18acf766a75dad5a5ff3df22a8f00267dbde9945786a203dd9de487
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=general+knowledge+astronomy+pdf'. Another critical heuristic indicates a link farm, suggesting the document is designed to drive traffic to external sites. The presence of these links and the document's structure strongly suggest a phishing or malicious redirection attempt.

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=general+knowledge+astronomy+pdf In PDF document text
    • http://files.toadsoftowedhaul.com/uploads/1/3/2/7/132740214/3856901.pdfIn PDF document text
    • http://files.uticalax.org/uploads/1/3/0/7/130775668/bofomavo-rijasekoziw-jimejofo.pdfIn PDF document text
    • http://files.theironox.com/uploads/1/3/0/7/130739835/e9b743b21b9.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/1/0430/0632/8995/files/panoziwojesopevila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31184917419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/nepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8988/7396/files/discord_why_can_t_i_hear_anyone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9011/5736/files/56799428909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7421/5331/files/takesopib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1221/7241/files/92681954136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/ziwevovum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/delik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6472/8479/files/how_to_fix_corrupted_hard_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.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_off00006cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBA 5652 bytes
SHA-256: 343b6564370430520d58221a0ea8b8011ce77b4e56e56b6b7c79659abe8d3a82
font_01_sfnt_off00008000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 10816 bytes
SHA-256: 50159a133c278c977b2b19e2a139cb627f2c0b48846bc5b32d0398cb06b5f921

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