Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce198aa4c9b7d25…

MALICIOUS

PDF

104.2 KB Created: 2020-08-08 22:52:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 107aae10bfb34e8d8437178633be2f09 SHA-1: f869aa3bc8459396ef7986a9fd1d4c17dddf970d SHA-256: 3ce198aa4c9b7d253069e1489e3d9f66fa53a5aa401e927cfc6b02f309f84d20
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 malicious content. Additionally, the PDF hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious intent. The ML classifier strongly flagged this PDF as malicious. The embedded URL in the document body, 'https://ttraff.cc/pify?keyword=neuro+exam+template+pdf', is the primary indicator of malicious activity.

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=neuro+exam+template+pdf In PDF document text
    • http://files.tecsmithinc.com/uploads/1/3/1/4/131407802/8897386.pdfIn PDF document text
    • http://files.copelincontract.com/uploads/1/3/1/4/131406222/nebugux-wibovuva-fakomilorivedud.pdfIn PDF document text
    • http://files.daveflynn.com/uploads/1/3/2/7/132711965/lamadaxelag_loxosak_ninenoxik_xitajefedaj.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/1/0436/9294/9658/files/karawuwitaxusikonulusajan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5120/3225/files/36801923569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/87436741480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/19624752832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/bipomaniwojuwadukimim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8685/5840/files/ayurvedic_medicine_books_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9334/3899/files/mikodaweramazevetudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/dazavetewizuwunebiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/legarurinekevenevujit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/90789003234.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 4

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_off00015f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F44 5048 bytes
SHA-256: f1f85348a88c69f14150f1c7cd789aa5e52812ee57fff6f805b34ebc277f4be1
font_01_sfnt_off00017065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17065 10340 bytes
SHA-256: 83700655b1dab7020bb8604daa094388b608499a74f478293596c7eb020cb9c8

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