Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed8530d7449debe…

MALICIOUS

PDF

51.7 KB Created: 2020-08-04 16:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b698567a2fca6929cc6ff33cdec721a4 SHA-1: 80d75524b764e57da461c16362ff3abb2be7a090 SHA-256: bed8530d7449debe7f97a0831ccb939a5ca9fafc37f184db29ff2c804520a7ce
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to potentially malicious redirectors like 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=hydraulic+accumulator+calculations+pdf', suggesting a lure for users searching for technical documents. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links indicates a distribution 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.cc/pify?keyword=hydraulic+accumulator+calculations+pdf In PDF document text
    • http://files.kscoastie.net/uploads/1/3/2/7/132712514/debuzu.pdfIn PDF document text
    • http://files.milledlogs.com/uploads/1/3/1/4/131482950/4023771.pdfIn PDF document text
    • http://getajenej.dennisandkaterina.com/uploads/1/3/0/7/130739227/remow_gitesuxitus_valugijut_xonilelunokiv.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/1/0438/4735/2480/files/86329396008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/garth_brooks_discography_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/zetoveredodijubenutizunis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5855/1189/files/callback_function_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/english_reading_comprehension_test_b1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/93695051863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4543/7083/files/jatixofijemotazonus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/32824067844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/laxigitifudavizemitipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5388/2280/files/chinese_zodiac_story.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_off00008cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD1 5364 bytes
SHA-256: 603e7a776b72907363e13d3befddb84e39e7510f0062b84d82d29f13e53589dc
font_01_sfnt_off00009f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F00 10044 bytes
SHA-256: ffa9ba4985a186b790c12dff57e721adb613d8ba0784c65bb083e7d476d800ef

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