Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a88fa8c5e0dd3f0…

MALICIOUS

PDF

43.8 KB Created: 2020-08-08 17:00:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad0f6ab17c957cc740c68917ff6ac333 SHA-1: d3fed26e5203c05250c2049bff591aa4cc44c77a SHA-256: 9a88fa8c5e0dd3f0edc6c5f967d02c8883f17ec10454c934b341ec2ee7f4a213
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains text suggesting it is a 'Bangalore press calendar august 2020 pdf', likely a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, many hosted on Shopify, likely to obscure the malicious redirector. The ML classifier also flagged this PDF with high confidence.

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.cc/pify?keyword=bangalore+press+calendar+august+2020+pdf In PDF document text
    • http://files.alexferguson.co/uploads/1/3/1/4/131482944/nazag.pdfIn PDF document text
    • http://files.michelletockyork.com/uploads/1/3/1/4/131406688/503884.pdfIn PDF document text
    • http://files.stanfordamends.com/uploads/1/3/2/6/132681517/venusexezap.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/1/0430/3329/7058/files/foxejuwasujexurexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/58415595665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/bharathiyar_songs_with_meanings_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9093/4949/files/2343383740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1830/5179/files/67946773506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57727452667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/neufert_architect_s_data_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6072/7703/files/mapa_de_aracaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/nesesizedukotibixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/72424169051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4742/6965/files/28743554702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/phonics_lesson_plans_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/mongodb_rename_field.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/27812527269.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_off00006b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8C 5644 bytes
SHA-256: d59d23799e13c86e7015406abbdc8170a96b77bb432ac167f2b2fc4d9e8e3ef6
font_01_sfnt_off00007ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED9 10376 bytes
SHA-256: 26e27a6774057787dff61583c552949bf8a8444516eea05b82a6d7130b893725

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