Malicious PDF — malware analysis report

Static analysis result for SHA-256 056a7160256cb4b9…

MALICIOUS

PDF

39.3 KB Created: 2020-08-11 15:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4374f376b3accae9f03c9f7fdcf26ac4 SHA-1: e9386a64775eb0e6770b3a3d865d6bb3a056b2c6 SHA-256: 056a7160256cb4b962da023ab82109e7144cee272525194eebc880225fefac89
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a known malicious infrastructure at 'ttraff.ru'. This indicates a phishing or scam attempt, likely to distribute further malware or harvest credentials. The ML classifier strongly supports the malicious nature of this PDF.

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=hoy+et+al+mathematics+for+economics+pdf In PDF document text
    • http://files.vargislab.com/uploads/1/3/1/4/131437445/livenoxu_dagaxowila_redejod_fujiti.pdfIn PDF document text
    • http://files.trailffest.co.uk/uploads/1/3/0/9/130969456/052c6c13a.pdfIn PDF document text
    • http://files.lomtheater.org/uploads/1/3/0/7/130740323/1589cb70e79aacc.pdfIn PDF document text
    • http://files.philjeremypersonaltraining.com/uploads/1/3/1/4/131406114/c5d5983e5c3fe5.pdfIn PDF document text
    • http://semupebug.realabstractart.com/uploads/1/3/0/9/130969352/0f6c55da4.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/1/0433/9171/3447/files/74058113098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/disexolaniwekejevubiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/siwive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/boravujuxevepixosopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/76198355274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/antihistamines_for_dogs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/86879787982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/danavuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3033/2060/files/tugakezavogakoxatatajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3658/0757/files/murenisixidawojejonov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7516/4574/files/jalujizikalatebufu.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_off00005a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4A 5456 bytes
SHA-256: 32e3d6b306a04ee4b0e9c625782440860f946c7e11fa350c16246ac3dca26c0e
font_01_sfnt_off00006cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB2 10428 bytes
SHA-256: a1d4787447f5ad3498962cfda85687760b6faf7117c6d5dd605582877e3d3a9d

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