Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6acaa4b75634dd7…

MALICIOUS

PDF

43.9 KB Created: 2020-08-17 02:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5eff614258a037971b7b995066cba026 SHA-1: 0cd74c4a6ed23745df417295932196161d0484ba SHA-256: e6acaa4b75634dd700f2460506e49efcc71624a2b9efbd374e65f2d593da71c6
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=adverbs+exercises+for+class+8+with+answers', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. No scripts were extracted, limiting the analysis of further malicious behavior.

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=adverbs+exercises+for+class+8+with+answers In PDF document text
    • http://files.visualresearchnetwork.co.uk/uploads/1/3/0/9/130969572/8a41c.pdfIn PDF document text
    • http://files.daviestreeservicesltd.co.uk/uploads/1/3/0/8/130814280/kamipabotu.pdfIn PDF document text
    • http://files.chiefskugaid.org/uploads/1/3/2/6/132695829/a213cbab8f.pdfIn PDF document text
    • http://files.haylingchristiancentre.org/uploads/1/3/0/7/130738614/d2aeae666.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64630415929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/teachings_of_don_juan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/mumilaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/change_file_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1162/files/a_random_walk_down_wall_street_author_burton_malkiel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kivamusefelozadadazub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/escala_salarial_camioneros_julio_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9546/5892/files/88719868804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/ielts_general_reading_practice_test_with_answers_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4011/0754/files/php_and_mysql_web_development.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6024 5440 bytes
SHA-256: ca5f2d626b8f3b2ce6e05b400d235c888921e0756991648ec26ee02c9cf6e41f
font_01_sfnt_off0000729e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x729E 9908 bytes
SHA-256: 9c60ad5732816951ceb1d1df20c426d64f063f83241d69a1d91a86a0407e4f9e
font_02_sfnt_off0000948d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x948D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378