Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee5d5a4715fd054…

MALICIOUS

PDF

36.6 KB Created: 2020-08-08 14:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2368b28a09794ab3ffc4ba1906085d8 SHA-1: 332925e79febc7461d1850e4f09178d960e11616 SHA-256: cee5d5a4715fd054d676f669c3ff3dba0f130290d36bdeb9d703e640191d9979
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify, likely for SEO manipulation to increase visibility. The ML classifier strongly indicates maliciousness.

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/wb?keyword=biography%20vs%20autobiography%20worksheet In PDF document text
    • http://radegim.greater-faith.org/uploads/1/3/1/4/131406149/lepefikamejosu.pdfIn PDF document text
    • http://files.molecularultrasound.com/uploads/1/3/1/3/131379409/lutegorus.pdfIn PDF document text
    • http://voxuvi.heritagemaplefarm.com/uploads/1/3/2/3/132303382/180329.pdfIn PDF document text
    • http://files.mountziongt.org/uploads/1/3/1/3/131398141/naramisodexuxomi.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/1/0433/0966/2366/files/gamumeretekajasabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0069/8792/files/gradeup_static_gk_capsule_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/13622307084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/mevoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/velaledu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/dekiguleduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3645/5591/files/yamaha_yst-_sw215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4665/files/botolukaloranamowidawevez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8359/files/weruxupojotobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/nakunomawujub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/gixexujoratebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/rikuturekuzinozovokup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3767/1075/files/lg_g6_root.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 3

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_off00004f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F02 5556 bytes
SHA-256: b3b9b12bb0e8c08e3cb32a82e3e2e000999c7a653095cde8755eb309a5f71394
font_01_sfnt_off00006206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6206 10292 bytes
SHA-256: 5038fad25737b20f59ebf231d213c56830d727fdd73a0dced80b77f4309b1009

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