Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4073b472dab82b…

MALICIOUS

PDF

42.2 KB Created: 2020-08-17 03:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e789c3e66c1c8b1344bb932c0150099e SHA-1: e8da5586908c67ae98a722d710961c8e335f97d4 SHA-256: 9e4073b472dab82bec24c1879eaf5c552915f6f364fd965d226f0d03837b6a0f
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The presence of the URL https://ttraff.ru/pify?keyword=biodanza+music+s suggests a redirection chain designed to obfuscate the ultimate malicious payload. No scripts were extracted, but the link farm and redirector indicate a likely phishing or malware distribution 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.ru/pify?keyword=biodanza+music+s In PDF document text
    • http://files.service-lifts.com/uploads/1/3/1/4/131454523/8144723.pdfIn PDF document text
    • http://files.lasclasesdesenorag.com/uploads/1/3/1/0/131070178/6747274.pdfIn PDF document text
    • http://xepine.buildidahogreen.com/uploads/1/3/0/8/130813332/208e33570.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/1/0450/2568/9758/files/automobile_technology_by_nk_giri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/75837073214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/bowflex_workout_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3446/7752/files/77862935379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/czasy_teraniejsze_i_przesze_angielski_wiczenia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3140/3413/files/waiting_for_godot_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/adobe_after_effects_cs6_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6043/9713/files/articles_of_association_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6062/5562/files/63619501583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8662/4406/files/read_geronimo_stilton_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7784/5671/files/vimovubizinuka.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 6

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_off00006793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6793 5056 bytes
SHA-256: db064cefd5d11608a6f1297cbc0ee6f98afaa505eb9885f546ebeed8eba07268
font_01_sfnt_off000078b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B4 10616 bytes
SHA-256: 099c378acb61f600832e3ca3d538fb32f5d716af2dea3e8c7dbf19ed990f601c

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