Malicious PDF — malware analysis report

Static analysis result for SHA-256 843f9306653f02b1…

MALICIOUS

PDF

152.3 KB Created: 2020-07-29 15:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0bd72ae2a6b85330e308d3d24c9e5b0a SHA-1: 6a1a1571fafc40b04741f9f0daad33b29feea05e SHA-256: 843f9306653f02b105ab7c9fa1a33b9b806ad185ff052bc674b37b913dc6419d
134 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector infrastructure, specifically 'ttraff.ru'. This is indicative of a phishing or scam attempt, likely using a lure related to 'antimicrobial resistance review pdf' to entice clicks. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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.
  • 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=antimicrobial+resistance+review+pdf In PDF document text
    • http://files.hirneisenhighflyers.com/uploads/1/3/0/7/130775432/4bf2a2.pdfIn PDF document text
    • http://files.stfranciscentre.net/uploads/1/3/1/1/131164351/0e7da.pdfIn PDF document text
    • http://files.trillastable.com/uploads/1/3/1/4/131406211/bisufid.pdfIn PDF document text
    • http://files.adventuresinfaith.us/uploads/1/3/1/4/131437513/tudowenute_vijerasokesi_jodisopis.pdfIn PDF document text
    • http://files.hilltoppreschool.org/uploads/1/3/0/7/130775252/7ed8132dbfb498b.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/1/0433/4298/7423/files/gojerix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/kaxubinujoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5733/0853/files/83891757620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4461/6864/files/74327449265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/87203991997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/dutawiwunalisemabojujer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1644/3288/files/ragetuxuruvivikalibevapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/gonuriwodilavaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2245/files/sebaxegitam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/gevunopafij.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20647 5372 bytes
SHA-256: 4624bfb67763e06e6edddb512639355a9af589bff19829a2462a086529c14bd6
font_01_sfnt_off0002186e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2186E 10752 bytes
SHA-256: de4dc0e3a717582ba0deaa2b7d094e3debad4d41267fc1effca4610fd1ea4f28
font_02_sfnt_off00023d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23D63 16148 bytes
SHA-256: 43dd7310e986e37c0562d6efd2a67b6291a0d41fa892ecd43b306c3e7231f7b7

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