Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc528c8c257fb350…

MALICIOUS

PDF

60.8 KB Created: 2020-08-24 03:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1dd8cdfacad6f138dd0c58e417579b9e SHA-1: cbb9bdafe755b4cad982610d81f6ca627f419439 SHA-256: fc528c8c257fb35001db456c8165c431cb81c78b5bfa7ab95d4a18471a51dd9a
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. The primary link, 'https://ttraff.ru/pify?keyword=bleacher+report+nfl+power+rankings+week+11', is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign, aiming to lure users to malicious sites through seemingly legitimate search result links. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a social engineering attack.

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=bleacher+report+nfl+power+rankings+week+11 In PDF document text
    • http://files.hillsviewmontessori.com/uploads/1/3/0/8/130874210/1251669.pdfIn PDF document text
    • http://files.ovillavet.com/uploads/1/3/1/4/131408798/pisujumazisab.pdfIn PDF document text
    • http://files.eastlakecongregational.org/uploads/1/3/2/3/132302916/6851984.pdfIn PDF document text
    • http://files.sfsailing.org/uploads/1/3/2/6/132695636/453de08241ec7c.pdfIn PDF document text
    • http://budalunof.hydrologicsportfishing.com/uploads/1/3/0/7/130738667/4172698.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/1/0433/5622/5688/files/49465695027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/action_plan_template_for_special_education_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/kanuxanudebolomejofesepof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/15570932609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/resufivurofefilogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0174/0439/files/human_body_organs_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/curriculum_and_material_development_in_english_language_teaching.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0845/7877/files/ielts_academic_reading_practice_test_download.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 8

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_off0000a345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA345 5324 bytes
SHA-256: 123201939010b9f373ecac64fa8034953b59b5a6e234883f703dc3b19b52cd9a
font_01_sfnt_off0000b56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB56C 10240 bytes
SHA-256: db0428e66c74d0589ed501fdef9fbbf0fb3f624b4ec90c693e7f45a3e7a14863
font_02_sfnt_off0000d84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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