Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f5b3a7cd365ae7b…

MALICIOUS

PDF

41.6 KB Created: 2020-08-02 16:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3de42a9bcde9c6d604dd9b9376fd819a SHA-1: cf661cc545fb48cf525177fa40cbf23a71bbafe0 SHA-256: 4f5b3a7cd365ae7b555cf604e3d47f57f3677c413c916ebecaae81d314c1c547
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body and PDF facts reveal a large link farm, with many links pointing to Shopify domains, likely as a means to host malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=stardew+valley+lucky+lunch, which is used to redirect to other potentially malicious resources. No scripts were extracted, but the extensive use of redirectors suggests a delivery mechanism for further malicious payloads.

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=stardew+valley+lucky+lunch In PDF document text
    • http://files.hampshire-oceana-hypnotherapy.com/uploads/1/3/1/4/131437056/7334995.pdfIn PDF document text
    • http://files.capecodgypsea.com/uploads/1/3/1/4/131438708/taxipatuge_solazevimexuwi.pdfIn PDF document text
    • http://files.rockandrosh.com/uploads/1/3/1/4/131437484/labovawexa-wipuzevowodage-votaporazaluna.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/1/0432/0978/5499/files/javepadan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/48124877347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zavokalozetaxolemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/39842347798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/wesonuzojodufinigebonid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7866/4867/files/nj_business_registration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83300066175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5821/7631/files/wiwijof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/jivapomepuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/gungeon_sunlight_javelin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/jogepevipupelaxosonoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4028/4583/files/82752576801.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 2

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_off0000649f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649F 5272 bytes
SHA-256: 94e40faaa1511c40ec437483d30873b797a20495ac4bad7976da56157e132869
font_01_sfnt_off000076a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A1 10308 bytes
SHA-256: a990166dedc6d6645c58709c34c1d84ad8bcf31cf8ab393d524bfc364c6e60ba

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