Malicious PDF — malware analysis report

Static analysis result for SHA-256 1769ecd6a1455ba8…

MALICIOUS

PDF

44.6 KB Created: 2020-08-04 02:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e93cfe7e41e7e4998ecf0c178bce879 SHA-1: 7c5e5d3c265370167bf7dee65f3fb2f606511c59 SHA-256: 1769ecd6a1455ba880e88c333180a4816604591468983151692adabdb8f7c0d1
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, which in turn points to a malicious URL. This indicates a phishing or scam attempt, likely using the guise of a free PDF tool to redirect users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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=best+pdf+to+word+i+love+pdf In PDF document text
    • http://files.nc-zeitgeist-foundation.org/uploads/1/3/1/1/131163635/8774186.pdfIn PDF document text
    • http://ketaz.bodypaint-nederland.nl/uploads/1/3/1/8/131871871/safudurisidu.pdfIn PDF document text
    • http://files.ronyah-arts.com/uploads/1/3/0/7/130776823/xunosalew.pdfIn PDF document text
    • http://files.thefootrailstore.com/uploads/1/3/1/4/131452878/3550964.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/1/0432/9157/4430/files/43186978334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwunojipodaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/14275248272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/lovazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/69352832486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/xolafagaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6911/1461/files/arthur_schopenhauer_pessimism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/67175611806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/dutekasarexukoloruwijomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5583/2469/files/firefox_change_download_location.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
🗂 Part of campaign: castlehillchocolate.com 5 samples

Related samples 3

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_off0000711a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711A 5028 bytes
SHA-256: e9ea54bb3ac37ef84185e2284168f00851602c2ef396c6f1c1ed99c29d149d9c
font_01_sfnt_off00008261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8261 10392 bytes
SHA-256: a467bc258d6013aebdda7831d04552e84d69819b058b7472020698d524b8198d

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