Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ca08a1690b713e…

MALICIOUS

PDF

63.3 KB Created: 2020-08-14 07:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8edd377ec4a54835bf3262089ae6b76b SHA-1: e8c0bdfde990a058d0af099a05cbd4ccee77e899 SHA-256: 12ca08a1690b713ed4ad71aadec72439d603741b8e5e7ab5436d05b13de8d2f7
194 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a known malicious URL, disguised as "Hypermobility syndrome guidelines". This indicates a phishing or scam attempt, likely to lead the user to a compromised site or download further malware. The ML classifier strongly supports the malicious nature of this PDF.

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=hypermobility+syndrome+guidelines In PDF document text
    • http://files.richardmiraan.com/uploads/1/3/1/6/131606291/dujobinava-dazewe-zozerixasuk.pdfIn PDF document text
    • http://danaleti.arborcasket.com/uploads/1/3/1/4/131438137/nufalu.pdfIn PDF document text
    • http://files.alexandroquerevalu.eu/uploads/1/3/1/4/131407364/fekofuzubusunek-banupedevada-rutezobadipuj.pdfIn PDF document text
    • http://files.jvjewelers.com/uploads/1/3/0/7/130740026/5200e3cc6.pdfIn PDF document text
    • http://pakaxuwa.seanaffordfineartstudio.co.uk/uploads/1/3/2/7/132712050/lijikasinivizolilim.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/1/0430/3798/2869/files/91955371457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/53084966430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4334/8892/files/posejuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/85788306281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/71837089622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2756/1621/files/bapivejuvofel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5796/1374/files/mufagerokijipofug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/nizolajun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/56778994585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/53784918715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/65798275060.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_off0000b93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB93D 5272 bytes
SHA-256: 1b1eb4c7bf1998d9c255392e6e58e906d5b691f8313a0199a17cb66418a4150f
font_01_sfnt_off0000cb11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB11 11176 bytes
SHA-256: 32b156d740f7fc56bf23fbd7ae340a853037894d6ef3f4ea8929f1b97d3dfa7c

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