Malicious PDF — malware analysis report

Static analysis result for SHA-256 966cfcedb4865535…

MALICIOUS

PDF

40.7 KB Created: 2020-08-20 01:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7978a2a191842d59704202de82861ba1 SHA-1: 5618381fa577c508cc473d59e39e6ba3e9d3e828 SHA-256: 966cfcedb4865535598c846d5bf5269e7fcd3de841e9fb4489d8ac8c135310ec
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=sandvik+catalogue+2019+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0428/1086/7871/files/dojuk.pdf'. The document body, though heavily obfuscated, contains references to the catalogue lure and the malicious redirector URL, suggesting an attempt to disguise malicious activity as a legitimate document. No scripts were extracted from this sample.

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=sandvik+catalogue+2019+pdf In PDF document text
    • http://files.pilatesofweston.com/uploads/1/3/0/8/130814258/puvaruma_bofak_zegujuvuselifel.pdfIn PDF document text
    • http://files.munchingnumbers.co.uk/uploads/1/3/1/4/131453421/gopekezinixokajej.pdfIn PDF document text
    • http://kevepoku.secretsocietyofyoungartists.com/uploads/1/3/1/4/131452903/aaaf7f4d252458a.pdfIn PDF document text
    • http://bitigalo.jessikasmithmusic.com/uploads/1/3/0/7/130738748/598620.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/1/0428/1086/7871/files/dojuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4157/6344/files/automatic_door_opening_system_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/42924521760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/17634503673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/99425969244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9581/7382/files/66183515600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/lizemularariba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2512/0927/files/letufam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/xikaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/55624589226.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 4

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_off00005dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD4 5756 bytes
SHA-256: c44820dd7c5491afcd693e9d7f319841ed9cfe33fb9927e70a8c6c49d7a80d0c
font_01_sfnt_off0000718f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718F 10676 bytes
SHA-256: 8a5e08a74d98282aea4646964911aa6ff9ee4851bd9176ee249ca9c8ef128f3b

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