Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a5ee593266ef79…

MALICIOUS

PDF

65.7 KB Created: 2020-08-09 13:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80bf7b27677cbe72303948586b7503d4 SHA-1: d65e71dfb6800acab9b590c36d6cfaf003c50a66 SHA-256: 90a5ee593266ef7996f2ec11e90240becd9f473f0fbb5fdf29cbd428b5c87586
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, disguised with keywords related to 'cerebral palsy assessment form'. The primary malicious URL, https://ttraff.ru/pify?keyword=cerebral+palsy+assessment+form+pdf, is designed to lure users into clicking by appearing as a legitimate document. The PDF structure and embedded links suggest a phishing or redirection attack aimed at leading users to malicious content.

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.ru/pify?keyword=cerebral+palsy+assessment+form+pdf In PDF document text
    • http://nodixul.scotthanberry.com/uploads/1/3/0/8/130814297/6929812.pdfIn PDF document text
    • http://files.morganraebrown.com/uploads/1/3/1/4/131411474/gixake.pdfIn PDF document text
    • http://koliwux.naturalgallantbodybuilding.com/uploads/1/3/0/9/130969723/53f3afdc.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/1/0433/7329/7814/files/rabixusegujil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3489/3718/files/save_gif_photoshop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/vulazunowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0025/1036/files/juxov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9886/4800/files/fybsc_chemistry_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/hematology_test_results_interpretation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/peter_thiel_zero_to_one_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/annexure_d_for_minor_passport_filled_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5052/0996/files/safety_valve_data_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1786/1280/files/paliponerofebajovaronirez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0319/1193/files/wetozovuvezolizigugir.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC214 5332 bytes
SHA-256: 0a5305d2ef7745b1c9e8df270a30a67cde37ee43ec63ed5a943192750512ea89
font_01_sfnt_off0000d41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41F 10624 bytes
SHA-256: 95ca46bb14eaf994d24af474d6482086159962b4de29156300b63ba8f6dc0344

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