Malicious PDF — malware analysis report

Static analysis result for SHA-256 37b623c52eab6e73…

MALICIOUS

PDF

44.2 KB Created: 2020-08-16 13:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: befe0b9f80f067d940dffad4bedac16c SHA-1: 299d6a544e5e44171c0d40776fecc7372c5db09c SHA-256: 37b623c52eab6e73f0b99a2837402b8ec1ef2dae7ad963880ed34f8c2505cb44
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=react+material+ui+dashboard+template'. This URL is likely part of a phishing or malware distribution chain. The document body, though heavily obfuscated, also contains this URL and references a 'React material ui dashboard template', suggesting a lure. The presence of numerous external PDF links, many hosted on benign platforms like Shopify but likely used to obscure the malicious intent, further supports a link farm or SEO poisoning attack pattern.

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/pify?keyword=react+material+ui+dashboard+template In PDF document text
    • http://basuser.phoenixtherise.com/uploads/1/3/1/4/131453114/vitevenexasaga.pdfIn PDF document text
    • http://fezijo.suncitylibraryfriends.org/uploads/1/3/0/7/130776393/93340543d.pdfIn PDF document text
    • http://files.travelbaseballrankings.com/uploads/1/3/1/4/131437061/a0c90fdb78125.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6982/files/all_derivative_and_integration_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/capacitores_ceramicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/xanuwozuzed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3751/5176/files/xenepix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/12206347583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8003/1137/files/11930070932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/88994207993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/andhra_guide_box_office_twitter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6365/4040/files/esl_ordinal_numbers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2971/5354/files/xutani.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EB 5236 bytes
SHA-256: e034667fe767e864ef675f03af72da1038ab70d18069edb02d2755a875c3c61d
font_01_sfnt_off000073a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A7 9868 bytes
SHA-256: f5daea7e6cd37b3eb287001d4a454472e786a2f48d4d9d8df8189306dceba1e7
font_02_sfnt_off00009557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9557 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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