Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb163db45ab00f62…

MALICIOUS

PDF

47.7 KB Created: 2020-08-06 20:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b614c0e97926c23e80559f18dea2ef7 SHA-1: 9a68e04cb2f2a53e50542f9ad835f4cbf5fd6d9b SHA-256: bb163db45ab00f625903a8af8c3c0d66c624b9e98cfea5fa88baeafb9eaede7f
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious domain, disguised as a cheat sheet. The ML classifier strongly indicates maliciousness. The document body contains obfuscated text and multiple embedded URLs, including the primary malicious redirector and a large number of Shopify links, likely part of a link farm. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a phishing or redirection attack.

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.com/pify?keyword=design+patterns+c+cheat+sheet+pdf In PDF document text
    • http://talul.bekindtoeverykind.com/uploads/1/3/1/4/131408024/7935704.pdfIn PDF document text
    • http://files.zoza.co.uk/uploads/1/3/1/4/131437308/9516992.pdfIn PDF document text
    • http://files.jackblairgray.com/uploads/1/3/1/3/131384018/eede518175.pdfIn PDF document text
    • http://files.kineticaussies.com/uploads/1/3/2/6/132681698/3291697.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/1/0431/2730/8454/files/kenor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/76087239037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/56799716977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/logodolajiniwigebuzapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3844/8548/files/minecraft_0._13._0_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/fofilixamokanasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/roman_workbench.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/12657941624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3968/5799/files/85033947597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/vapoxamipatuzewexob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/79997805571.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_off00007e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E66 5384 bytes
SHA-256: c2a3d4aeacdc7dff4d764db41382996942fcb8680077d9e9be2dc78f84565b1f
font_01_sfnt_off000090b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B3 9720 bytes
SHA-256: 75835ddb4c9f7d249ad29433bb10052489db9dfdada6165e49fc018b5483db20

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