Malicious PDF — malware analysis report

Static analysis result for SHA-256 9375ed72e96ac7c5…

MALICIOUS

PDF

44.8 KB Created: 2020-08-25 00:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ab81712fecc73c88ddfc16925912591 SHA-1: 36747a6c0d983d8b988ae9c964dcde8735d8d2e1 SHA-256: 9375ed72e96ac7c57db64f06952c98f15a8a1a697b1c47d08da771232e785326
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a technical document. The document body and embedded links suggest an attempt to create a link farm or lure users to malicious content. No scripts were extracted, but the presence of a malicious redirector and the nature of the embedded links strongly indicate a phishing or redirection attack.

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=telerik+kendo+mvc+grid+column+template In PDF document text
    • http://files.xjrichert.com/uploads/1/3/0/9/130968958/1608279.pdfIn PDF document text
    • http://files.medicalherbalistsussex.com/uploads/1/3/2/7/132740586/8488068.pdfIn PDF document text
    • http://files.maggiemccabeart.com/uploads/1/3/1/4/131406344/6cbee74.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/1/0431/0820/4701/files/98176166175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7809/6798/files/action_verbs_flashcards_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/66836652293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/43807685501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/chains_book_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/powerpoint_templates_modern_design_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/55432665609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/ligejalizuwoxirosem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7679/5030/files/nafinupefixitiwudapof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/le_bouddhisme_livre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9172/0347/files/15890601572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.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 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_off00005a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A11 5288 bytes
SHA-256: 59920ecdf05efd2f350c4c5f93e811a504323937a767b63279cfb4a20e7d99d0
font_01_sfnt_off00006bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BED 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000747b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747B 15764 bytes
SHA-256: 140ee517babecf95b5c984ea922ca557a6877fee02e70642407d8de171647d74

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