Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a72b80389fa1bb0…

MALICIOUS

PDF

48.9 KB Created: 2020-08-31 04:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ee37b7c8eadb4731217cd2352196705 SHA-1: 16e8e15971f1c9688f3b32b0c56794a177af1f8d SHA-256: 2a72b80389fa1bb0c5ae5cedce96403393c361d437dbffa6718e0b25989bec9c
194 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'https://ttraff.ru/wix?keyword=katte+nee+veesharuthippol+mp3+song+d'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify, suggesting a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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.ru/wix?keyword=katte+nee+veesharuthippol+mp3+song+d In PDF document text
    • https:///59/2116959/crop_175x175_2116959.jpg,albumartwork_largeIn 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/1/0434/1766/5703/files/project_canvas_template_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/kevuwuniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5026/1915/files/14169580928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/jetujobajosulotaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6878/2757/files/zalolanadikovar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/1634207182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/cst_to_est.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/baabul_movie_songs_mr_jatt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/lisogol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5190/9274/files/14289590237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0451/0887/files/biology_quiz_questions_and_answers_for_class_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/brownie_badge_requirements_making_games.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_off00006305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6305 5448 bytes
SHA-256: 1516a24ea39e8e6f2f7a5adf859e450ef84755c8c79e91bc4e32fc3ed27e49db
font_01_sfnt_off00007562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7562 15968 bytes
SHA-256: bb952c96db804400e154448216d07fa768ed57a225757fa8e86d38126d7d89f0
font_02_sfnt_off0000a6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D5 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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