Malicious PDF — malware analysis report

Static analysis result for SHA-256 75564c93d47a30ec…

MALICIOUS

PDF

62.2 KB Created: 2020-07-30 09:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1008c727a68218a7305ca245f38da5e SHA-1: 02f101a6c3ce8c187910adc318a15c7e3bcb2996 SHA-256: 75564c93d47a30ec9a8e80e66e9defa38f200a6e7073bb0e5d40b197398342ae
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'standard deviation of grouped data examples pdf'. The presence of multiple embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially 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=standard+deviation+of+grouped+data+examples+pdf In PDF document text
    • http://files.holisticvoicecoach.com/uploads/1/3/0/7/130739069/2de5abc5cab0.pdfIn PDF document text
    • http://files.artoframachandran.com/uploads/1/3/1/4/131454190/5799702.pdfIn PDF document text
    • http://files.cafedatalkalamode.com/uploads/1/3/1/4/131483550/3bbbf7.pdfIn PDF document text
    • http://files.johnwilliamscounseling.com/uploads/1/3/0/7/130775025/7249548.pdfIn PDF document text
    • http://files.eleanorwilkinson.co.uk/uploads/1/3/1/4/131413678/vorukeje.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/1/0437/4550/9537/files/bokobigobotakafuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/84473866096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7292/8409/files/85119432764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/81320038074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/2590590108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/nirixavupitegidume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4014/4534/files/jidebamejiwuwexabet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1541/3658/files/78920558448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6627/7534/files/nipudosonakusem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/saluxife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/18034323651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30549310566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/naroguwogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5724/0478/files/39384658765.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_off0000b15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB15B 5476 bytes
SHA-256: 919075121e46c9f714b3705293ad5a87c26da4494a79c1fc7d488db7a9ef24bd
font_01_sfnt_off0000c3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E6 11352 bytes
SHA-256: 36df6f0611eb80b29e107f4f8e2780f28f91a93d6b48babde63611acd6a3c45b

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