Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64380a65fd5c73c…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 14:25:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f48edbf04f5783707a6a43eaa8e10dc SHA-1: 546a056dfcc863f8b80b9580c5aa359ffec70eba SHA-256: e64380a65fd5c73cd335aead8c72e7f5b48d648622a2e8c13ebdc2549a1c0302
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. One of the primary links redirects to a URL associated with known malicious infrastructure. The document body contains garbled text but includes the suspicious URL, further supporting the malicious intent.

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=banff+ski+resort+snow+report In PDF document text
    • http://files.energysmartacademy.com/uploads/1/3/0/7/130739174/d6844.pdfIn PDF document text
    • http://files.shibuecaribbean.com/uploads/1/3/1/4/131437194/161121.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/1/0434/6842/3334/files/biology_9th_class_punjab_text_book_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/22955989664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/41528498583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/fundamentals_of_computer_graphics_marschner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4774/5698/files/rapiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/english_grammar_in_gujarati_angel_academy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/mamuxerurujopuremasinufos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4915/5740/files/fufugutiwubufabelutob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6466/3967/files/failure_analysis_report_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/repepeluxexirewat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/45254505785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/zipode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/malepojenufimum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0386/9346/files/area_and_perimeter_of_parallelogram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/77842528070.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 6

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_off00006ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC1 5068 bytes
SHA-256: 44ce47e1586a9e2672608e87a752ce28cbbe0fd38ccea79953013b452625b1b7
font_01_sfnt_off00008024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8024 10888 bytes
SHA-256: e9cdf339480dcf43592fd0e810b52995ba403c8c098b2e7912c1303517f43ee9

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