Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd9cad87459d668…

MALICIOUS

PDF

40.8 KB Created: 2020-08-18 19:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 957cbe119aad14b74f9d132b81ef26b2 SHA-1: f8cb50e11ed659018c49dcabe210165559c5c1ef SHA-256: cdd9cad87459d6688416ad21be6eeed47045ecc048ac07dba8796247b60c43d1
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, likely as part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=24+slides+ppt+templates'. The document body, though heavily obfuscated, contains this same URL and references "24 slides ppt templates", suggesting a lure to entice users to click the malicious link. The file's purpose appears to be redirecting users to malicious infrastructure.

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=24+slides+ppt+templates In PDF document text
    • http://files.volnapc.com/uploads/1/3/0/9/130968921/5bf60a.pdfIn PDF document text
    • http://files.marielarraineweir.com/uploads/1/3/0/7/130740589/7826235.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/1/0432/6529/4491/files/public_financial_management_act.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8524/2276/files/vezimuwadunev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/nupeginagupememopefojukil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/22445729676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8053/8526/files/free_editor_form_filler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9629/4051/files/piriformis_syndrome_muscle_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/xutobirozewuxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3202/6008/files/ada_diabetes_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/zavowazixejogan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/fufezolaremuwikizitavekak.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_off000062d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D8 5132 bytes
SHA-256: 5b8d6385078c0fe7120c481cc940a0e6fe6c7516e44bd0fd43d51208f6cadeaf
font_01_sfnt_off0000743d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x743D 10120 bytes
SHA-256: e4c2e035ced5cbf8f0f98e9f093396828f30a47cdea256db3f3f99c51d0fda44

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