Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec713f8598994978…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 13:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2235045808f945ebd5118b647ab20e0c SHA-1: 123b79fd1df4c2485d70e75dac1bfc87417adc59 SHA-256: ec713f8598994978017618e5092f9acc922b137330d929cd1d8216ceb4b4d92a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Formation aftral montpellier', suggesting a lure for training or job opportunities. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification. The primary IOC is the redirector URL, which is likely used to serve further malicious 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.com/pify?keyword=formation+aftral+montpellier In PDF document text
    • http://files.commonwealthathletics.com/uploads/1/3/0/9/130969021/1473615.pdfIn PDF document text
    • http://webemi.pyrfectlyhandmade.com/uploads/1/3/0/9/130969573/nogitigago.pdfIn PDF document text
    • http://boris.margolisphilosophy.com/uploads/1/3/1/4/131437361/52edf15d.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/1/0437/3128/8216/files/51523549052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/20444928298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4441/3350/files/4005433139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0721/2694/files/didefusuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/wajiraxubalowasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/napadodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/9344857609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/97134809132.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00005d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D67 4824 bytes
SHA-256: e4c303bbec573e569bc720967934b58dd731855dbf083d9f002dac1f43402b13
font_01_sfnt_off00006db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB9 10096 bytes
SHA-256: ba4fc7d72b009c9739f0fbd9c4f254bac1bacb3e5604950d2098696dfd78d26d
font_02_sfnt_off0000906c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x906C 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

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