Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4c63e868b2f4657…

MALICIOUS

PDF

43.4 KB Created: 2020-08-13 00:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e1798ea30c2b2a8201b89cec7805fef SHA-1: 24e16cf7b72068ddcacefcc61b11688046000da2 SHA-256: b4c63e868b2f46575baabdda7072413492daedb6bd8914d3870c7e8bf58988dd
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a song partition, likely intended to trick users into clicking through to a malicious site. The presence of multiple embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content.

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=cerf+volant+les+choristes+partition+pdf In PDF document text
    • http://files.hamabe-dojo.com/uploads/1/3/1/6/131636956/6085307.pdfIn PDF document text
    • http://files.elementalretreatmassage.com/uploads/1/3/1/4/131407734/9639134.pdfIn PDF document text
    • http://files.christinenobleseller.com/uploads/1/3/1/4/131437149/xowuvagalefup.pdfIn PDF document text
    • http://files.redriverobedience.org/uploads/1/3/1/4/131437987/d7a458f3a.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/1/0439/2720/8091/files/ff14_act_plugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/dufufipameludivusebusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/pepabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/sewabulaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/pujafimebowaluzezedes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/47273638590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/96820711851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/labapux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7789/4293/files/fefax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/lojuparasijatozire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/pimivale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxumadebamapetutorobegew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/90895931128.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 3

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_off00005aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAD 5208 bytes
SHA-256: 9b37f6064c044894700521980af228e08c571401d420b73e9816130445ab6a80
font_01_sfnt_off00006c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5A 16280 bytes
SHA-256: 732a162722475845f7342ee4b7464276479baa755856b2d21d37d15e482a4a05

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