Malicious PDF — malware analysis report

Static analysis result for SHA-256 624442a8cc1bf90b…

MALICIOUS

PDF

164.9 KB Created: 2020-07-31 04:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 556b2b954ce42d4d42f963dd7e43fc9c SHA-1: a37fa29b6646a7d990d883d1d7be8e61a5414e88 SHA-256: 624442a8cc1bf90b92babfd1289a9d83bd848c46dc3dca952e3b437f4e3bbb8f
134 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to a redirector infrastructure, specifically 'ttraff.ru', which is flagged as malicious. The document body and heuristics suggest a lure for free PDF downloads, a common tactic for phishing or distributing further malicious content. No scripts were extracted, but the redirector link is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=baixar+pdf+free In PDF document text
    • http://files.saintpatrickwapella.org/uploads/1/3/2/3/132302787/jazulidoxu-xojiwuvinufuzim.pdfIn PDF document text
    • http://files.rekindledorganizing.com/uploads/1/3/1/3/131378993/41d6eaf.pdfIn PDF document text
    • http://files.sustainabletourismreport.com/uploads/1/3/1/4/131406173/8243914.pdfIn PDF document text
    • http://files.musicunderquarantine.com/uploads/1/3/2/6/132683140/denenepite-memogi-jasit.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/1/0429/1526/6713/files/62516440979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/2462151974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4685/5078/files/xiwuwatebilekovogoviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/subaxarijeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9659/5868/files/mujefulomil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/juwarilebapoxonudevizono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/82384624265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/31126548345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6241/7825/files/fodujame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9436/0735/files/xixajazasemapijota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4764/1510/files/wowemesevolunuwa.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_off000253e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x253E5 4432 bytes
SHA-256: 50c7f726131a8f9caea5afcc7cca4e51c97e5afad4d1887bde2e06f9aa40e761
font_01_sfnt_off00026300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26300 10588 bytes
SHA-256: b7f2b0f18fb90ddea577f043571fc48f01d80f8e7fda78a9662d36aab9215dac

Open this report in the interactive analyzer, or submit your own file for analysis.