Malicious PDF — malware analysis report

Static analysis result for SHA-256 763a66d4c52bd6d5…

MALICIOUS

PDF

47.9 KB Created: 2020-07-30 06:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2491900825fabe9f4b982d7215663eb SHA-1: 8dcff4338f7bfd4d9ef38a93e0c0866efa7b9dcc SHA-256: 763a66d4c52bd6d56ae82dda4da7d81a3f108a032e63d91cdff825a1bc862f4b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=spastic+paraplegia+rating+scale+pdf'. This suggests the document is part of an SEO link farm or phishing campaign designed to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.

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=spastic+paraplegia+rating+scale+pdf In PDF document text
    • http://files.intempodanceensemble.org/uploads/1/3/1/8/131871874/wedodav-tipuzajuvetidiw-luwotapupivegus.pdfIn PDF document text
    • http://files.carolinevanthoff.com/uploads/1/3/1/4/131453990/sanoburamug_kewubuxe.pdfIn PDF document text
    • http://files.shirleygoodwinphotography.com/uploads/1/3/2/6/132681212/lokarujupipe.pdfIn PDF document text
    • http://files.ceirpittsburgh.org/uploads/1/3/0/7/130739544/c6529d463.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/1/0431/1816/6167/files/26345861753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/46862470386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5720/9753/files/pimulutakigivonanusonigon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4832/8603/files/33632671077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/16081150341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/limuwotud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2817/5255/files/45148779906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/gogig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4394/5628/files/68481999263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5405/6095/files/kuzif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/kapuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1262/0447/files/zumaluposesijugajukax.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 7

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_off000070e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E3 5104 bytes
SHA-256: 4b31a1c61654ede1bc764ef7d2c90e7fc45d514c957f458619053c129a4c21e3
font_01_sfnt_off0000823e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823E 15396 bytes
SHA-256: da807ae0e069ba44faf4c72c0c56662269ff03f8f044acccffee93bb84fcb6ae

Open this report in the interactive analyzer, or submit your own file for analysis.