Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3615b1c6de6e18…

MALICIOUS

PDF

40.3 KB Created: 2020-08-17 02:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d05c22b3e89331b8c6932e2b0b399372 SHA-1: 41b1f93c01157e6c6a71179f1f81bd2fa71c33d1 SHA-256: cc3615b1c6de6e18a1c3382ac037c084182c27a2b21004364513358569cba8e4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, many of which point to a redirector service designed for SEO spam and phishing. The document body, though obfuscated, contains text related to business letters and includes the primary malicious URL. The ML classifier strongly indicates maliciousness, and the heuristics confirm the presence of malicious redirector links and a link farm, suggesting a phishing or malware distribution attempt.

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.ru/pify?keyword=business+letter+writing+format+examples In PDF document text
    • http://files.iliasvasilos.com/uploads/1/3/1/4/131409755/8f8353f9096834.pdfIn PDF document text
    • http://zaxoriz.hoaks4wheeldrive.com/uploads/1/3/2/3/132303382/fba0245b9.pdfIn PDF document text
    • http://jekugad.inescapableclothing.com/uploads/1/3/1/4/131454029/zuwonigijipi-guzejol-xowopolunom-rasolaguf.pdfIn PDF document text
    • http://files.stjameshaubstadt.com/uploads/1/3/1/3/131397971/676123.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/1/0434/2287/5797/files/canoscan_9000f_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8137/5648/files/nunevijowizin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9650/6521/files/wavadosuradidaliwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/61711361436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/11953643628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7508/3169/files/6345163867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/0571/7141/files/15050734811.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_off00006023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6023 5432 bytes
SHA-256: 7a67e9b30489755c398d9ba4fc4a4dff800f4ec36170234323f0092ef0cb65b8
font_01_sfnt_off00007299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7299 9964 bytes
SHA-256: 9591d8432de2bef4b4c4a77a97f622da4877bc83020e6838533cfe26b52e53a0

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