Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d28ab971bf4de35…

MALICIOUS

PDF

174.1 KB Created: 2020-08-15 02:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e2f0ce38678f2b7349a2129b3667a95 SHA-1: cf0e50b82df0892e3ba67cb8c7f02e4cb260dc18 SHA-256: 2d28ab971bf4de359b3a08d3914ebf7de3d795688c9e335273f7b4ebae40e12d
134 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 'ttraff.cc'. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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=fringes+of+equal+inclination+pdf In PDF document text
    • http://fedirunu.splendiferossity.com/uploads/1/3/0/7/130740596/mafag.pdfIn PDF document text
    • http://files.skerd4u.com/uploads/1/3/1/3/131382841/6284578.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/1/0433/3617/1688/files/navofodaxetite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/florida_warranty_deed_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/2100/4963/files/basic_virology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2931/5239/files/60631023899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3369/8209/files/neruzulitisofovefebone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/jepowuwumizuwev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0129/6534/files/dikeganidotuputazisunop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/39831765014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/tedajelov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0704/8860/files/tetofenijeduse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/vunupuduna.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000226b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x226B4 2900 bytes
SHA-256: 68d094faf81d2ea9f62e68ee4e789e40b6192f27e323b9e50c58fbaa8f881837
font_01_sfnt_off000230f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x230F7 5404 bytes
SHA-256: 8cb2d6cf176ec05a909ca809647337f2354e00c3e6eadcd1c7c111647c798ed3
font_02_sfnt_off0002435c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2435C 2848 bytes
SHA-256: 582984ed8fac1465300ae0b49521a4ac998f8a6f7a3cf3da6debfa58ee1ccb61
font_03_sfnt_off00024eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24EB2 21416 bytes
SHA-256: d504efe10278b584b089711a9409033372078355b486c851915856546696cacc
font_04_sfnt_off0002913e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2913E 17044 bytes
SHA-256: c3028a052c8753c96b7079e5360e4e0af5958d4a9cc4fbc6b8995ae914d4ed21

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