Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d3ac90c5ebfbb8…

MALICIOUS

PDF

44.2 KB Created: 2020-07-30 02:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 777d95868bb60ee76d96d2a253f1556b SHA-1: 37bf739a36e09b9e0a438cdb38f4b322db57366a SHA-256: 93d3ac90c5ebfbb861cdc662fe1824a18ce406d4909eea8acc8d87236f3fb18c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to improve search engine rankings for malicious content. One of the primary links directs to a known malicious redirector, 'ttraff.ru', with a keyword suggesting a lure for a specific PDF. The document body, though heavily obfuscated, contains text related to 'Bailey and love 27th edition pdf' and wkhtmltopdf, reinforcing the lure. No scripts were extracted, and the maliciousness appears to stem solely from the redirection infrastructure.

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=bailey+and+love+27th+edition+pdf In PDF document text
    • http://files.psuactsci.com/uploads/1/3/1/4/131453302/kagotusap.pdfIn PDF document text
    • http://files.carriedolan.com/uploads/1/3/0/7/130776864/9017134.pdfIn PDF document text
    • http://files.diamondlightworld.net/uploads/1/3/1/0/131070611/rijawosipobuv-luxolapajosa-dezovir-jorisufuk.pdfIn PDF document text
    • http://files.policeaward.com/uploads/1/3/1/8/131856398/jazazole-wezofobifewe-pusonifol-wotiworutilo.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/1/0428/5110/6972/files/leruvasewanajumuwefokal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/92101523443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87899810879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/divinixazonaziwagidovoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/zinexelunagexuzen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/81420917260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/90929202432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/vijiletug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/larilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/27004753389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.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_off00007145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7145 5068 bytes
SHA-256: d0c595b7b65ae86bd387f78c4fd9af8c4f761388fe50870df5a7b125a6e9fee0
font_01_sfnt_off0000828f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828F 9660 bytes
SHA-256: cd3bab4408cd5732c1aa3147a6f5f6fd0daff5b0a3d7362104c24def217da493

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