Malicious PDF — malware analysis report

Static analysis result for SHA-256 524c0542b3c1a97f…

MALICIOUS

PDF

42.2 KB Created: 2020-08-24 21:06:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6664708e60926b992ef2b4874437f8e8 SHA-1: d3cc48d9daaa339415524bd9782b84a4cb2cf2f9 SHA-256: 524c0542b3c1a97fad416cdd901d5d683cbbd23dfcd8e039ed9c1b0089f94115
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=baby+carrycot+sheets'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0462/2771/8293/files/kijexovelidumukokumetuji.pdf'. The document body, though partially corrupted, contains the same keywords and URLs, suggesting a lure to a malicious site.

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=baby+carrycot+sheets In PDF document text
    • http://files.huesoproductions.com/uploads/1/3/0/8/130873902/1326642.pdfIn PDF document text
    • http://nakag.stbrigidsschool.net/uploads/1/3/0/7/130775413/5853942.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/1/0462/2771/8293/files/kijexovelidumukokumetuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7245/4807/files/11082285043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0718/4793/files/feelings_and_emotions_wheel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75815848510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/41042217416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/67723102317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/gametogenesis_embriologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/56181748786.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCF 5144 bytes
SHA-256: f1541d7a77591bb9debe534df738bf6b4d4c9bfba0c8c53fff4c24cb1ed57e8a
font_01_sfnt_off00006e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E41 2532 bytes
SHA-256: 394c240c8e5f3aadab1a709b55e5cbcc1b47e189138539bd4f0501eb3f16b16f
font_02_sfnt_off00007955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7955 10060 bytes
SHA-256: d259bef2e04944938473ef36b9ab9433aa01d98b50a85a21363c7fc6b84b6c22

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