Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca3756cd967398d4…

MALICIOUS

PDF

56.4 KB Created: 2020-08-12 16:22:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1af89cfa3b650ac84663ef85ad92f87f SHA-1: 7d7ace94077c6f0c59c9b3894d621595b315ae97 SHA-256: ca3756cd967398d4dc3e8a9a431620a92ebea4e438234d372f520418b48dcf33
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to ttraff.cc, which is known for distributing malware. The document body and embedded URLs suggest a lure to download further malicious content, likely disguised as a legitimate PDF. The ML classifier strongly supports the malicious verdict.

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=reasonable+faith+christian+truth+and+apologetics+pdf In PDF document text
    • http://files.bestvirtualofficeperth.com/uploads/1/3/1/4/131409037/sulodegexenufu-wajibutunidoje-tikevejirofa-sixaxu.pdfIn PDF document text
    • http://nifotuxul.gloriousminis.com/uploads/1/3/0/7/130776208/9a9ae31e8626.pdfIn PDF document text
    • http://files.kathrynemyoung.com/uploads/1/3/1/0/131071076/porewuvofadaxa.pdfIn PDF document text
    • http://files.revjeremiahrood.com/uploads/1/3/1/8/131858661/75976996c4e606c.pdfIn PDF document text
    • http://files.sweetlilslimes.com/uploads/1/3/0/7/130738593/fimulolapuwuvedu.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/1/0428/3976/9254/files/vesowesefad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/fakerar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/42197600880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/vawozenirapovufupuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/40333702177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6829/1232/files/73734302005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/2724246849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/kulimakixem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/writing_argumentative_essays_nancy_wood.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0357/4434/files/jurnal_unstable_angina_pectoris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED1 5564 bytes
SHA-256: f21fe76fe72682be90de9b3858f0635b41de84175dad9237cbde282ebe51cc68
font_01_sfnt_off0000b1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1AC 10088 bytes
SHA-256: 28bf2e5f93ab1c7242db5e19211fc3491c36107f22bcd42c9bc746f399439b8e

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