Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee3826c16ee6567…

MALICIOUS

PDF

40.4 KB Created: 2020-08-16 21:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af56e3cb4e2b48a8badd5725b3dc2f7b SHA-1: 84c5f254c9d2ac37af6f848a84cd774663082a17 SHA-256: dee3826c16ee6567aef94cc3438dc4bd7f25ae61966b88cd34feb8657d12e24a
202 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.com. The document body, though heavily obfuscated, contains text suggesting a lure for a 'Phd thesis powerpoint template' and includes the malicious URL. Another critical heuristic, PDF_SEO_LINK_FARM, indicates the PDF is part of a link farm, further supporting a malicious distribution pattern. The presence of a visual download button lure reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=phd+thesis+powerpoint+template In PDF document text
    • http://files.wordplaygifts.com/uploads/1/3/1/6/131606487/tolituta.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/1/0431/0574/7108/files/tanagigoxugefeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5271/1581/files/gasovarurivakekinaxoneva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6080/4249/files/renutov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/mabewuribadatapara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1864/7709/files/ferudetamutunaluloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/bokune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7514/7678/files/gijazarok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1240/7967/files/rufupesavosalizufipawix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8510/2237/files/5222366445.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 1

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_off000061c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C4 5292 bytes
SHA-256: 20273f62ab86781f13572a27019939d5f2bd2199669ffd6d43ed9f0bfed3eb1d
font_01_sfnt_off0000739d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739D 9776 bytes
SHA-256: 4ec18ccd2f1f9e6135d4e200bb4d964b02f29e01c426e01d2c0c84a7542b2a59

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