Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3d1f168f64f20b…

MALICIOUS

PDF

44.2 KB Created: 2020-08-10 19:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72da34fc76fa9ce1fbb874a4f711206e SHA-1: 5e2629a8c91948470926b326523041de5ca0c0d0 SHA-256: 6a3d1f168f64f20b316a63683bf8aa2bfd464909395971aff215e56a1c760a4d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting the primary purpose is to drive traffic to malicious sites. The presence of numerous PDF links and a redirector indicates a link farm or phishing 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=exploracion+cardiologica+pediatrica+pdf In PDF document text
    • http://xekov.actacoustics.co.uk/uploads/1/3/0/8/130874493/gazab_begaga_turidope_sarifub.pdfIn PDF document text
    • http://files.bridecon.com/uploads/1/3/0/7/130739916/8992394.pdfIn PDF document text
    • http://files.panisangelicuspress.com/uploads/1/3/1/4/131454523/427fa.pdfIn PDF document text
    • http://pomakamul.ibastek.com/uploads/1/3/0/7/130776262/3715778.pdfIn PDF document text
    • http://files.musicmattersintheuk.com/uploads/1/3/1/3/131384025/8822457.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/1/0429/5353/9747/files/safunalapavekuxemeran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6995/5486/files/56796604159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/22492330221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/stainless_steel_medieval_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/vugitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4594/4481/files/augmented_reality_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/gixawajamasolivekuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/53422614267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8615/1834/files/5435315941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2705/4237/files/22942848241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/zewopevizowowejimonevuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4963/6255/files/barbarismes_valencians.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_off00006fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBA 5168 bytes
SHA-256: 1099788acd59589496c92e7b33678e1235b7d8e191b2e77a2d79e153a728736b
font_01_sfnt_off00008162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8162 9928 bytes
SHA-256: 3da660fac78617841158f19ff5e43aa614304af51369246705c77efd7f2b8606

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