Malicious PDF — malware analysis report

Static analysis result for SHA-256 2decc09f1611df0e…

MALICIOUS

PDF

47.9 KB Created: 2020-08-13 22:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03a84f1e27a6d6f48a8b5741b022a395 SHA-1: be87b515ba690761d6215436551b8393be960c99 SHA-256: 2decc09f1611df0ea08839de6eacfbaaa6e948c6227187e697200efed6c119e9
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=single+stage+cluster+sampling+pdf'. It also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicated maliciousness. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL is the primary indicator of compromise.

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=single+stage+cluster+sampling+pdf In PDF document text
    • http://files.noestansolos.org/uploads/1/3/0/7/130776266/gogegolivulinob.pdfIn PDF document text
    • http://files.maximsdogue.com/uploads/1/3/1/4/131483083/voxulorawifegixus.pdfIn PDF document text
    • http://tevaxezaw.davidawestbrook.com/uploads/1/3/1/4/131482995/vajudubom.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/1/0434/9159/0308/files/72893533061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/zetox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5837/8392/files/78590409050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7220/0605/files/58253157624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7064/3614/files/mp4_to_jpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/sudetodegoluwafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8216/files/751855186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/wemuxepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5789/5831/files/56730527795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1451/9973/files/sojixogovato.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 6

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_off00007d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D58 5580 bytes
SHA-256: 5a95a3a3556b7130001d11509221f631177b171dc05ecc5bca04e0a46da8d064
font_01_sfnt_off0000903d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x903D 10140 bytes
SHA-256: c24cad4906597cb60acd2046b07f05231b1fa91a2861bfaf14eb447ce9df5fd9

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