Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79ca6ea94d3d168…

MALICIOUS

PDF

50.5 KB Created: 2020-08-17 00:23:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 55268bdd72abb0c754ef9ec7d903882c SHA-1: b7b1b44dbd0f3eaeb1caee7b02b95f6eefde289c SHA-256: d79ca6ea94d3d1680381140d92289d87c43e371db4bd5ab617064622589ac17f
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=antenatal+care+guidelines+fogsi, which is likely intended to lead the user to a malicious site. The file also contains a large number of external PDF links, suggesting a link farm or SEO poisoning attempt.

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=antenatal+care+guidelines+fogsi In PDF document text
    • http://files.grandaveplaza.com/uploads/1/3/1/3/131398095/zujupodo-vomasumivofagi-xonovogaf.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/1/0431/4149/6981/files/aprendizaje_basado_en_proyectos_secundaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/clicker_heroes_idle_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1560/files/lixevikunumudasesanotiguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3279/files/kawavewizeper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4447/files/fuverasazinoguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9929/0776/files/wewajunebevidakajosugap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4371/5229/files/wefusuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7703/4399/files/extent_reports_in_c_relevant_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4346/1032/files/zuder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/engineering_mechanics_dynamics_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/doduwakuresubowudiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7405/1491/files/coda_shop_apk.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 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_off00008823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8823 5180 bytes
SHA-256: a55ad7c6fb78bd3e3854dde9ac9f910f07e1f767dadac2d817177a67bfb6243d
font_01_sfnt_off000099c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C7 10264 bytes
SHA-256: 88814a6030b22af46382a7fa8eb22cb2f8da7ac4511895e5389ba47cda60e02c

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