Malicious PDF — malware analysis report

Static analysis result for SHA-256 3534fe50a9a50671…

MALICIOUS

PDF

36.8 KB Created: 2020-08-24 08:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5750dca89b6927fdb8f8e67343293bc9 SHA-1: 2867838e0cda464e7d2d07cd2aa8221f187d494a SHA-256: 3534fe50a9a50671095b4ef31882a30efccf382ab1fa9484dbe142bbe7d6bce1
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site. The presence of numerous links, including the malicious one, indicates a likely attempt to drive traffic to malicious infrastructure, possibly for further exploitation or phishing.

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=traffic+report+i+40+west+nc
    • http://files.certainperfectratio.com/uploads/1/3/1/6/131637125/fapilowetelaji.pdf
    • https://cdn.shopify.com/s/files/1/0434/1687/9271/files/82808205892.pdf
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/65232244222.pdf
    • https://cdn.shopify.com/s/files/1/0434/9932/3558/files/xoxuwexuxaludevudidom.pdf
    • https://cdn.shopify.com/s/files/1/0429/7313/5011/files/sivanamowanuwerug.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/fofekopitewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6746/files/lewis_structures_and_vsepr_practice_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/86746993342.pdf
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/51603809562.pdf
    • https://cdn.shopify.com/s/files/1/0439/6161/4494/files/cleric_character_sheet_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/30864930255.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_off0000482f.bin
45f66d318d086fc1bcaef71c2552db21f289d0d3905e7de997152890df5c6060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x482F 5248 bytes
font_01_sfnt_off00005a26.bin
7eef9ce135a5f469610e324635acc99e3747a2294f909a07b47d9ecb8b304512		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A26 13696 bytes

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