Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2222df0b1d16f54…

MALICIOUS

PDF

37.7 KB Created: 2020-08-12 05:55:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1915e524dd884b5c4db3ba32a052113c SHA-1: 39c37f46d904dc011c93e4eacf4ece7674a82863 SHA-256: e2222df0b1d16f5470add5794ba28aa45b83325cdd1991e2712162d5ac75bb93
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. Another critical heuristic identified a large number of external PDF links, suggesting an SEO manipulation or link farm tactic. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the URL 'https://ttraff.ru/pify?keyword=amls+naemt+pdf', which is also flagged as a malicious redirector. The primary attack pattern appears to be the distribution of a large number of links, potentially to lure users to malicious sites or manipulate search engine rankings.

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=amls+naemt+pdf In PDF document text
    • http://xezekakow.tnlsfranklin.com/uploads/1/3/1/8/131856190/jovitas-wixizokas-jakusojome.pdfIn PDF document text
    • http://godamuv.pitbullinfo.org/uploads/1/3/0/7/130776760/4760566.pdfIn PDF document text
    • http://files.jjesmerarchitecture.com/uploads/1/3/1/8/131871740/b927d6f.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/1/0431/5057/3719/files/tebalofosod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5481/7690/files/biwilujusexanubufiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/49181888817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9535/9641/files/nijazubotewojikezulot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/yugioh_gx_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9559/5939/files/87926358724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6504/8214/files/avoir_conjugation_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1160/9500/files/interview_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6934/9794/files/jotenepijogula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/resumo_do_filme_escritores_da_liberdade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/favetutazifetarov.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_off00005526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5526 5080 bytes
SHA-256: 4506d57555fdf87b0db2fa0c6daa03453dd101b18e1c28f690fc6cbc51aff489
font_01_sfnt_off00006659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6659 10088 bytes
SHA-256: 95b85c39e25d2d50368eb38ba4d868dcab880d6d04379ad0b825e975b524c255

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