Malicious PDF — malware analysis report

Static analysis result for SHA-256 0766264b118b325f…

MALICIOUS

PDF

53.5 KB Created: 2020-07-27 08:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6c35982df89c67faff1f84110aced31 SHA-1: 6a644b81f76d26a85f8bc70f1ddf1f9df65b3dc2 SHA-256: 0766264b118b325f69a7b85336eb8dcdac44b1b5f195924189eee90cd9c2939b
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious SEO redirector infrastructure. The ML classifier strongly indicates maliciousness, and the heuristic firings confirm the use of redirector links for SEO purposes, likely to phish users or deliver malware. No scripts were extracted, but the embedded URLs are the primary indicators 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=isolation+of+plant+pathogenic+bacteria+pdf In PDF document text
    • http://files.sarakross.org/uploads/1/3/0/8/130874101/973424c.pdfIn PDF document text
    • http://files.michaelallensalsbury.com/uploads/1/3/0/8/130814229/3910707.pdfIn PDF document text
    • http://files.inbalancepsychology.com.au/uploads/1/3/0/8/130813317/gosizomiwevo.pdfIn PDF document text
    • http://files.healingreinsky.org/uploads/1/3/0/7/130740442/totuxapadever.pdfIn PDF document text
    • http://files.fear-lesstherapy.com/uploads/1/3/0/7/130739265/1207411.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/1/0437/1097/2053/files/bavasumejulefasupive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/bavar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5143/3627/files/pamesusitarizog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/89942231631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6090/3582/files/gutovisir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buwukepenarunowara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/37396952478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/80607128406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/67518524192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2873/4375/files/33538590408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3427/1126/files/73094350249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/29137920957.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_off0000936f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936F 5280 bytes
SHA-256: 34252f455564f603f1498629cce076aaa937d079f0c7a19356856108393b254c
font_01_sfnt_off0000a54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA54A 10276 bytes
SHA-256: 012ec8b123e37bb8002f3b7abda20b119c8f294ec99b29c5dff8bc16ac221d02

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