Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63d714c85206530…

MALICIOUS

PDF

59.6 KB Created: 2020-08-18 20:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea95c56fdebd0aa0ded51b076230852b SHA-1: ce31c2adef86d17c2073209bd9fa04166590df26 SHA-256: c63d714c85206530314a2b15ae230d9b61ed4f374ebb5e5eff8d7e3b594e14fc
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, constituting a link farm. One of these links redirects to a known malicious domain, ttraff.com, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated.

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.com/pify?keyword=encoding+b%2526+w+images+answer+key In PDF document text
    • http://files.moombaparkps.vic.edu.au/uploads/1/3/1/3/131383514/4040691.pdfIn PDF document text
    • http://files.usk9.com/uploads/1/3/0/8/130874257/tuxefuf_wefunipudul_sapepebexilojup.pdfIn PDF document text
    • http://files.dreamingofthereds.com/uploads/1/3/1/4/131406082/temezotiz.pdfIn PDF document text
    • http://files.sophiaunfolds.org/uploads/1/3/0/7/130775675/47b33d035c657.pdfIn PDF document text
    • http://miwob.rolypolyproductions.com/uploads/1/3/2/7/132740880/1193472.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/1/0432/8977/2187/files/equalizer_2_reviews_parents_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/45024706317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/54337084183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4504/1814/files/7626965307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5326/0701/files/defozutosegifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/torch_browser_windows_7_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/xonumuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/19370103910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/70584543005.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_off00009352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9352 4688 bytes
SHA-256: 78b5851bd8587417eec66e3e7251b1c835a06686451aec5cb0178f9ad4116f45
font_01_sfnt_off0000a354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA354 10960 bytes
SHA-256: c1795b9a635e35be3be5916e129acfbd49954e741f8c023788ff829718cc7f67
font_02_sfnt_off0000c8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F3 17104 bytes
SHA-256: 220247546d0790e235aadc1d4e7e152a4d6e10f5f9ec382d2b48ee5f596ec5bb

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