Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeac542fc3495b3d…

MALICIOUS

PDF

39.4 KB Created: 2020-08-17 15:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3ff39d0fb5c08617ad18011d0d4c7b8 SHA-1: dad932efe460e172b6e283b2d9573d2547aaf800 SHA-256: aeac542fc3495b3d87a1845b4d7fe9fe32c5953b75f56440bd4138c2841d2b5c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=active+listening+quiz+pdf' which is likely intended to lead the user to malicious content. The presence of numerous links to Shopify domains suggests an attempt to blend in with legitimate content while hosting malicious redirects.

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=active+listening+quiz+pdf In PDF document text
    • http://files.anjali-nath.com/uploads/1/3/1/4/131453623/tawosezekofafe_puvusuvuwet.pdfIn PDF document text
    • http://files.macrossanchambers.com/uploads/1/3/2/6/132696060/dekufapejitak_kibafoge_merewom_zufarab.pdfIn PDF document text
    • http://files.thereedmachine.com/uploads/1/3/0/8/130874162/43bd8.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/1/0431/1033/4620/files/ungrouped_frequency_distribution_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3070/0455/files/60426211091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/55177899314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2410/5124/files/zoforopesenejuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6279/files/minecraft_rule_34.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/the_biology_of_belief_bruce_lipton_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/92673574628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/pinitujizefajeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5730/6007/files/xozukoxipiworuxiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1336/files/dakavujolabeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7815/files/dilutosawudonunaz.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_off00005d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5E 5244 bytes
SHA-256: 0f6605a9435d2d016f97f66bde2633fa9e282f6fe5de4ae9610369e3b8164987
font_01_sfnt_off00006f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4C 9880 bytes
SHA-256: 36ca39f6bde1376d48946b74d74479809dda3d4061e5c8026d1a5930ba7d06ed

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