Malicious PDF — malware analysis report

Static analysis result for SHA-256 358594fef553bb97…

MALICIOUS

PDF

35.3 KB Created: 2020-08-20 03:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63ce9d4ea78fac2f53a2f853a22091b1 SHA-1: 2401d14a0df5eac81912b9d27933ab883cbec818 SHA-256: 358594fef553bb9735e5c4421c316f78d3fe6ae953baa323e27e450a3102d06c
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a university course listing. This suggests a phishing or social engineering attack aimed at directing users to malicious content. The PDF also exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs, likely to improve search engine ranking for malicious purposes.

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=university+of+alberta+course+listing+pdf In PDF document text
    • http://files.vertecreative.com/uploads/1/3/0/9/130969472/tapogid.pdfIn PDF document text
    • http://duleselev.karenhurd.com/uploads/1/3/1/0/131070702/cda4fc.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/1/0427/7446/2631/files/46140627763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4283/9455/files/how_to_calibrate_ph_meter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/bpsc_ae_civil_syllabus_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/80380520467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/51105962488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6971/0241/files/51165148173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4952854333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/fmea_manual_aiag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/80436523541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7753/2822/files/acrylic_mirror_sheets_suppliers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/dikumusopafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/eagle_scout_letters_of_recommendation.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
🗂 Part of campaign: edcentricteaching.com 3 samples

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_off00004ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA7 5616 bytes
SHA-256: 801274378b3fe7ba853713b22de02e83ab3d963e7201ba1d42635e4dcfa31ed4
font_01_sfnt_off00005ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED5 9724 bytes
SHA-256: 9195ef7f421b9ac4c280845879aba9daf5d19a3be44221a6574f1410bf1de2cd

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