Malicious PDF — malware analysis report

Static analysis result for SHA-256 9330248fb30cb932…

MALICIOUS

PDF

41.8 KB Created: 2020-09-19 18:25:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bdac7aef0a6ec8cbf79c5d2435516702 SHA-1: 0648ad745d9df9cd60fb876d7cb282b2f199af96 SHA-256: 9330248fb30cb932391c531913c87c28a9b2816d383ef29f47bc66644523b7c5
184 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.club/wix?keyword=barbu+d%2527uccle+price'. Additionally, it exhibits characteristics of a PDF link farm, containing numerous external links, many of which point to files hosted on filesusr.com. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the aforementioned malicious URL and several benign-looking PDF links, suggesting a lure to a malicious site.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=barbu+d%2527uccle+price In PDF document text
    • http://files.handmadehill.com/uploads/1/3/0/8/130873732/wufomebawufeli_fimeligoxud_mefazu_foripotavapuzo.pdfIn PDF document text
    • http://files.cmglassdesigns.com/uploads/1/3/2/7/132740375/pewobubotipa.pdfIn PDF document text
    • http://sitag.movingcompanyokc.com/uploads/1/3/0/8/130874330/tewidapuj.pdfIn PDF document text
    • http://xejinaso.pianoforyouth123.com/uploads/1/3/1/6/131636627/8571322.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://81afe605-ebfa-492d-bcbf-16bbfcd75849.filesusr.com/ugd/84a5c6_b03b902dbaa2425e929e82b12ba0d3df.pdf?index=trueIn PDF document text
    • https://4d7d5402-423e-45c4-8263-ced82579f898.filesusr.com/ugd/ea78e0_b50f924479dc427091b75f3a0e47c1cd.pdf?index=trueIn PDF document text
    • https://3d1e2c35-28c0-44db-8faf-46e4a7ad6e4a.filesusr.com/ugd/a8ca0f_a699882c934d4ab3846f39838ef8a42f.pdf?index=trueIn PDF document text
    • https://6be558b0-da87-4418-98fc-d5d6967dff9b.filesusr.com/ugd/77eba6_63a368258d2047898c55df7773861e4c.pdf?index=trueIn PDF document text
    • https://2671e63f-e971-48c5-86ec-9bf5d285eaaa.filesusr.com/ugd/ce4b7c_09c1d2f85d43491db0e9aa5b01ef1c7f.pdf?index=trueIn PDF document text
    • https://3c1b7bc8-fd09-431b-8be4-21be02d78b47.filesusr.com/ugd/4bb894_4ff7b5c3e3a141309313693f05f0e4e1.pdf?index=trueIn PDF document text
    • https://3f98a065-e9ef-48ad-8289-1560e23fe15a.filesusr.com/ugd/b361c6_f390a9b40d2e4a3b87e84ab437511e65.pdf?index=trueIn PDF document text
    • https://8638d3fd-4b41-422b-9b5f-7aee99f0a083.filesusr.com/ugd/e2f7e1_5eeac944fcad48a19afdb9dd169026f9.pdf?index=trueIn PDF document text
    • https://59c8326c-195b-4f51-8260-17d4595e1a55.filesusr.com/ugd/c4ccc4_9ce49f1ebc484e3b99f66811983db0ca.pdf?index=trueIn PDF document text
    • https://910fdb56-3c01-44b9-81af-e8bcb4722ee3.filesusr.com/ugd/60ffa2_4227f312e5bc4b41b0e0315e9fb6d2d9.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A8 5112 bytes
SHA-256: f4bf91b0862f18c4f57fd67ad16358aace0c21103d78385155d71c1613c1d7bc
font_01_sfnt_off0000751a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751A 10944 bytes
SHA-256: 05ab8343eeff6fcd03ecab961e4a2f54cd797203e5b5665fbf332dcc3b5ca031