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)
MD5: 9f48edbf04f5783707a6a43eaa8e10dc SHA-1: 546a056dfcc863f8b80b9580c5aa359ffec70eba SHA-256: e64380a65fd5c73cd335aead8c72e7f5b48d648622a2e8c13ebdc2549a1c0302
150 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 3

  • 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.
  • 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
    • http://files.energysmartacademy.com/uploads/1/3/0/7/130739174/d6844.pdf
    • http://files.shibuecaribbean.com/uploads/1/3/1/4/131437194/161121.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/biology_9th_class_punjab_text_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/22955989664.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/41528498583.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/fundamentals_of_computer_graphics_marschner.pdf
    • https://cdn.shopify.com/s/files/1/0438/4774/5698/files/rapiga.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/english_grammar_in_gujarati_angel_academy.pdf
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/mamuxerurujopuremasinufos.pdf
    • https://cdn.shopify.com/s/files/1/0434/4915/5740/files/fufugutiwubufabelutob.pdf
    • https://cdn.shopify.com/s/files/1/0431/6466/3967/files/failure_analysis_report_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/repepeluxexirewat.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/45254505785.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/zipode.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/malepojenufimum.pdf
    • https://cdn.shopify.com/s/files/1/0438/0386/9346/files/area_and_perimeter_of_parallelogram.pdf
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/77842528070.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ec1.bin
44ce47e1586a9e2672608e87a752ce28cbbe0fd38ccea79953013b452625b1b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC1 5068 bytes
font_01_sfnt_off00008024.bin
e9cdf339480dcf43592fd0e810b52995ba403c8c098b2e7912c1303517f43ee9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8024 10888 bytes