Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c176f76dc094069…

MALICIOUS

PDF

41.6 KB Created: 2020-08-14 22:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b79fdad4dd5bb8cab787fe6a905c02ff SHA-1: 5f0d737e2951e7906176f532e63a470001d43606 SHA-256: 2c176f76dc0940694745f99652985716a886c480442b5080b389bd6aa66265ef
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm and a critical heuristic firing for a malicious redirector link. The embedded document body text, though heavily obfuscated, contains references to 'business plan template startup' and the malicious URL. The primary malicious URL is https://ttraff.cc/pify?keyword=business+plan+template+startup, which likely serves as a redirector to further malicious content.

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=business+plan+template+startup
    • http://files.slcmassage.com/uploads/1/3/0/7/130775431/4558618.pdf
    • http://files.glenswanson.space/uploads/1/3/0/9/130969418/kuragewe.pdf
    • http://farevix.degustationwithoutborders.com/uploads/1/3/0/7/130738799/vuxivifo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5754/4342/files/52143353599.pdf
    • https://cdn.shopify.com/s/files/1/0435/9002/5375/files/68815539371.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zemeletitofugawekabol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9087/8372/files/90036428552.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/32570065476.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/givivilugodadudebodumekap.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/gididimumekutibavewefed.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/52302041204.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/example_of_argumentative_essay.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_off00006675.bin
ab5c74be37d07add1bfd1bb3ecfa7ffb010fa1d9a49195f6603fb3a9bdc6d1f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6675 5016 bytes
font_01_sfnt_off00007762.bin
acfef8f3516f25a25c0999abba04d810425ba6afce0d4b73de12cc01d4403cda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7762 9988 bytes

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