Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e11b98855da175…

MALICIOUS

PDF

43.3 KB Created: 2020-08-12 06:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed84ee0e1f23491b493fc743634c737e SHA-1: 4865db366c8e969f3a8f32d5240eb1cd71ecf7d2 SHA-256: 37e11b98855da17543033e9e4b65782653c0f58232cad0105602611fdc268c90
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains this URL and other embedded URLs, suggesting a lure to external resources. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.

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=elastic+collision+formula+pdf In PDF document text
    • http://files.studyaimusa.org/uploads/1/3/0/8/130874477/vitupuje.pdfIn PDF document text
    • http://files.aileenfletcher.com/uploads/1/3/0/7/130776611/kaliferivozi.pdfIn PDF document text
    • http://files.sbjc.org.uk/uploads/1/3/1/3/131381850/xuwobobix_nozofoli.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/1/0437/5727/3237/files/pedijibojesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5081520916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6345/7432/files/63047278858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8208/7588/files/61795851115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/detegagilapizibinil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/jemaxagarenatigevoweku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/ballade_pour_adeline_partition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0523/8688/files/xa_trang_file_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/digopav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6576/8096/files/napezupadibe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000577b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x577B 5256 bytes
SHA-256: b6ecfd5a9cb344fa5d87ab3c969240e8abd02eb78ee3c0338ee8325b4d5fa703
font_01_sfnt_off0000693a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693A 10076 bytes
SHA-256: db67192997e6c2f0fabdfdf5e9eb59b48a001a6e103c4b2217bd1bc771350dcd
font_02_sfnt_off00008ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA5 16088 bytes
SHA-256: ccd0ea095085b9379100d4de0d13d045157d8501f46cd3db2ef5c00475687e02

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