Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4236b9184c326b2…

MALICIOUS

PDF

46.5 KB Created: 2020-08-05 04:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6358c4127c6fecc04274eaa6e4766330 SHA-1: f8b4c0541a2febd887aebcf08ea4d6930d39f79c SHA-256: e4236b9184c326b2f0d07695b236cbe42d312b633365d4c33211aec54a2fbf42
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=georges+bernanos+libros+pdf', which is flagged as malicious. This suggests the PDF is designed to act as a link farm, potentially leading users to malicious content or phishing sites.

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=georges+bernanos+libros+pdf
    • http://files.carasoul.com/uploads/1/3/1/3/131384777/nazekemabaro.pdf
    • http://files.theshiatsustudio.com/uploads/1/3/2/6/132683001/tutomulavo_megovukefulimu_vozurobekarafag_zewezemasugetor.pdf
    • http://files.stgeorgestbishoyvisalia.com/uploads/1/3/1/4/131407549/rufonimexabe.pdf
    • http://files.bibicafebakery.com/uploads/1/3/2/6/132695576/679c60869e4.pdf
    • https://cdn.shopify.com/s/files/1/0435/8563/4463/files/fifiluwovowixi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8390/files/31864945401.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/80625166467.pdf
    • https://cdn.shopify.com/s/files/1/0435/4922/9220/files/32830256523.pdf
    • https://cdn.shopify.com/s/files/1/0435/6535/1075/files/ratadeki.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/kabuxilivigugav.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2622/files/sipirapegid.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/dojiludego.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/restore_disk_image_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/19456049885.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/21950344998.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_off0000752c.bin
c32bceaeec8a8f9b0574cbf7c5d1c78c587e7f44cc008fbb034f961a4eb25d30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x752C 5380 bytes
font_01_sfnt_off00008785.bin
5f89a2e5c84ef55ec78ed3d527821768b95db735013cfc68abe118ee3d64533f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8785 11020 bytes

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