Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e8c7f36c3ceb8e…

MALICIOUS

PDF

44.4 KB Created: 2020-09-12 09:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49f68753ec1eb2a8232ee40463a8f1da SHA-1: b85e8de7f4ea522972862b01e41c96c5b5ae9a43 SHA-256: c6e8c7f36c3ceb8eab2550c8443db7dd3d380676e5db4a1908a5bf23f4bb7842
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to suspicious domains. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that these links are intended to redirect users to malicious infrastructure. The document body text, though partially corrupted, contains keywords like 'ctet 2019 form fill' and the malicious URL 'https://ttraff.club/wix?keyword=ctet+2019+form+fill', suggesting a phishing or scam lure.

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.club/wix?keyword=ctet+2019+form+fill In PDF document text
    • http://fagozikut.noahsarkquarryville.com/uploads/1/3/1/8/131857252/c1c42bbe12d9.pdfIn PDF document text
    • http://nixoxow.deluxeredux.com/uploads/1/3/1/4/131409926/ruwit_gizesitenunado_bamajufi_roruxage.pdfIn PDF document text
    • http://files.mrk9inc.org/uploads/1/3/0/7/130740257/90cd5.pdfIn PDF document text
    • http://files.foosie.store/uploads/1/3/0/9/130969654/sokusudekagajuxinimo.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://static.usrfiles.com/ugd/4117a9_8e64f3b3199c42f1859c0692ef4a950f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8aba0c_fe26b5f8fd094ba29552155b1f576cff.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ca09c_b1ba852a81e74a1fbf4ab80769993c41.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c1615c_fdb152ed1e7b42f5b7714a0eee641c83.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d38238_76da3044935448c1a187eb0aa5cf65c9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/74e9cf_210c9e8203ba4c19b34faf25f6e4d816.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_e83e3481299b4288ad3cabdcf6e33d37.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0958/6853/files/sazejogalajusajijemufaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7176/5656/files/69254305347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7303/4658/files/30706040333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/puwifufumenaxetegamowetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/7881723249.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_off0000641d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641D 4712 bytes
SHA-256: 6a3ed02b8e55b153f3303732b630a47035d9f14efbb1dc3af89e3d26d08f08cc
font_01_sfnt_off00007425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7425 10312 bytes
SHA-256: c238c9a806552d5c5027924a79f496342231b7054ebf8208b8c68579e3419205
font_02_sfnt_off00009719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9719 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c