Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9371ad7e162fba4…

MALICIOUS

PDF

58.8 KB Created: 2020-08-04 22:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1958f2b4075712e4aaa65a46eca17b4 SHA-1: fa67c30cff14290c99245ca2ff3383f303050d81 SHA-256: d9371ad7e162fba4bf2e19bcb094d3704f6da1348db82f96a657caf7d43b9df1
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a search result for a technical book. This indicates a phishing or malware distribution attempt. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=download+thinking+in+java+3rd+edition+pdf In PDF document text
    • http://files.bingocompany.net/uploads/1/3/1/3/131379612/d2857f2095895b.pdfIn PDF document text
    • http://files.artisanfarmsbreeding.com/uploads/1/3/0/7/130739544/segodi_deximatoxuv_nekapikena.pdfIn PDF document text
    • http://files.stninascoffee.com/uploads/1/3/1/4/131437878/zipodaguleribe-toxakepulure-xokezexiwaxowo.pdfIn PDF document text
    • http://files.livelikelove.net/uploads/1/3/0/8/130814132/bazetulo.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/1/0429/0881/1427/files/poulan_weed_eater_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/bewobiratifupunubasusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9336/7710/files/39167843393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1923/8562/files/golavoganironorateke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/wunudeninuwiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/42621688998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/jikavukujej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/91788208735.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 8

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_off0000a698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA698 5580 bytes
SHA-256: 4a5777b610317433e1c84810b8c1885ba17274964b4c0608777fb0fd0cd5cbc3
font_01_sfnt_off0000b9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C0 10596 bytes
SHA-256: f4097a128ec3a62bbd68e5dede43f98020bfb1af030d99b4df300bd5ecf96f40

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