Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a54a1e5252e6bdf…

MALICIOUS

PDF

36.0 KB Created: 2020-08-13 16:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 223edbfe8cdc6d70f6f01983183fa726 SHA-1: 4e1597e3742b243d1aecf15d6ef8cf9926a4b71c SHA-256: 5a54a1e5252e6bdf4bfd61881c43d4f6f5231105d107588edc08d01e61499653
194 Risk Score

Malware Insights

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

This PDF file contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body and heuristics indicate a lure related to a 'Huion h610 pro manual', likely intended to trick users into clicking the malicious link. The ML classifier strongly suggests malicious intent, and the presence of redirector links points towards a phishing or scam campaign.

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/wb?keyword=huion%20h610%20pro%20manual In PDF document text
    • http://files.airn.ca/uploads/1/3/0/7/130775013/sapofojiwevineg.pdfIn PDF document text
    • http://files.bcmeccanomodellers.com/uploads/1/3/1/4/131406473/tejipamiri.pdfIn PDF document text
    • http://files.patradolk.com/uploads/1/3/2/6/132682124/d925d1864b3.pdfIn PDF document text
    • http://files.montevistalacrosse.com/uploads/1/3/2/6/132681315/jamedam_wafefe_mazep_navefuvub.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/1/0437/0271/4536/files/calligraphy_practice_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/pogalusomolasowik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5671/7224/files/diferencias_entre_anestesia_epidural_y_raquidea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45865267400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/2178494761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4103/8229/files/94926631097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/75153982451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/tokotatulokanividaxexidos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/99039211352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/noroxixejofozofig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/wisunawoguvivaxuzubal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1975/3879/files/define_collective_bargaining_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/83590348215.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_off00004f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F83 5188 bytes
SHA-256: 2ce11503744ddad287311ad09e4634ffd12cc65f0463c3015efd11cf83857fd6
font_01_sfnt_off000060f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F4 10216 bytes
SHA-256: dce716e722e3e15616fb2a7bff939ecff01ffd6f381664a8929b67ed0a1e26fa

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