Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c22b6e3e92c13e…

MALICIOUS

PDF

49.9 KB Created: 2020-08-05 06:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f61ae19bbb185247731dc8e2c04d65fc SHA-1: 4443d49abbce1eff8d531233c3308cd719e7de58 SHA-256: 23c22b6e3e92c13e7f52bae66e05e17f8462414ece43bc48bb8977a6f96baeff
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector service, which is a common tactic for distributing malicious content. The document body, though heavily obfuscated, contains text suggesting a lure related to 'blockchain technology ebook pdf'. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a deliberate attempt to drive traffic to potentially harmful sites.

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=blockchain+technology+ebook+pdf In PDF document text
    • http://files.stonegategeo.com/uploads/1/3/2/7/132740804/15f6f1f63.pdfIn PDF document text
    • http://files.furnacefallsfarm.com/uploads/1/3/2/7/132740371/1092165.pdfIn PDF document text
    • http://files.amandakdavidson.com/uploads/1/3/1/4/131407802/vofinix.pdfIn PDF document text
    • http://files.jubercreations.com/uploads/1/3/1/3/131380063/pubajil_peruj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6411/4852/files/77085595116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/gugoteberajemisekuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/16916309343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8035/1897/files/wuzufezawipexabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/nufifiruso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/the_world_s_end_full_movie_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/nibof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2190/8640/files/gepotako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/pimaxeduludubarod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/xewitexiluzuribuwepawu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7760 5284 bytes
SHA-256: e0e2defff0363cd87a1ed1e2a393af8447fdc52ff23d48179bbf58d569b4a080
font_01_sfnt_off00008954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8954 10284 bytes
SHA-256: 2ed05956150d9bbaef20ac635decbcaad47a2b7b78060d1def400527b4086316
font_02_sfnt_off0000ac83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC83 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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