Malicious PDF — malware analysis report

Static analysis result for SHA-256 b50444a9e5545df3…

MALICIOUS

PDF

45.3 KB Created: 2020-07-30 18:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d170142a836823a5c6b037e3aabbe0ca SHA-1: 5e7c88a31c60e908e3d0e693701f3409bafd6c8f SHA-256: b50444a9e5545df3f4d99d9df675194f9b08ef7ef389b64ce11fa2f346da496a
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links pointing to a known malicious redirector, ttraff.ru, which is designed to lead users to phishing or malware sites. The heuristic firings indicate this PDF is a malicious redirector and part of a link farm, suggesting a campaign to distribute malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.ru/pify?keyword=cedaw+philippines+pdf In PDF document text
    • http://files.jxli.net/uploads/1/3/0/7/130775997/1522425.pdfIn PDF document text
    • http://files.dazzlingstreaks.com/uploads/1/3/1/4/131438641/filotabivaxope.pdfIn PDF document text
    • http://files.teramorock.com/uploads/1/3/0/7/130775055/7885864.pdfIn PDF document text
    • http://files.jstarkdesign.com/uploads/1/3/0/7/130776561/xiluviruderizite.pdfIn PDF document text
    • http://files.bravechoicesmn.com/uploads/1/3/2/7/132740692/3102480.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/1/0435/7786/8443/files/vaviborefuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/95494093261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4037/2896/files/folinizanati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9542/4165/files/mizavobukatakabufep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/nagisusoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1465/1038/files/pavijifomavarusejebuwux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9567/files/guxexularaminix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2642/1672/files/60796475259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/4490058218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8834/6262/files/pimasumabifatufozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/3084242343.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 8

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_off000076bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BC 4748 bytes
SHA-256: 541690c95b5ded13e47499022db74712eba545f4562a618637c9781a9dc7accd
font_01_sfnt_off000086df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DF 9824 bytes
SHA-256: d8b9e01253647d1e62d17086b4bb09909ee83f9ca8ff77d6a2f1b81fb80ad2de

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