Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a86cb53531dbec…

MALICIOUS

PDF

40.8 KB Created: 2020-08-08 07:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd211c5acef34c6e414c297a4d3ad369 SHA-1: 75577cb8a1cfe724fec807a8d1977cc3fc272ac5 SHA-256: 36a86cb53531dbec789df0c865f8c67ea8e50ffc44bbd8f7850f8c767fbf7592
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to 'Bayern ticket map pdf' and includes the malicious URL. This suggests the PDF is designed to trick users into clicking the link, leading them to a malicious site.

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.cc/pify?keyword=bayern+ticket+map+pdf
    • http://files.redtreefarmstead.com/uploads/1/3/0/7/130775221/pudowunag-sexidazaxete.pdf
    • http://files.thermotrix.com/uploads/1/3/1/4/131407734/12612e9.pdf
    • http://files.noshbody.com/uploads/1/3/1/4/131408942/2045f1ea911c2a4.pdf
    • http://files.ssjo.org/uploads/1/3/1/3/131381003/6093852.pdf
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/92364420977.pdf
    • https://cdn.shopify.com/s/files/1/0429/3217/5014/files/biafra_civil_war.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/english_stories_with_telugu_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0440/8649/3349/files/audio_visual_system_design.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0440/5189/0341/files/jewopedexuju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/46851835643.pdf
    • https://cdn.shopify.com/s/files/1/0434/2025/4375/files/zeluxowezapejuwivesu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/gukutajezu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0649/1797/files/51404578309.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/satujezufetov.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_off0000622b.bin
997a75e36a22d100d2e386c7dc3344d5549e900bde6450a6cc71d6675ae17475		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622B 5304 bytes
font_01_sfnt_off00007433.bin
7a0bc4a89ce21f805a5e27bd925385b89494a2ee7e48f71611ad6d91b5e2fbf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7433 10024 bytes

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