Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c4fed10ff88c63…

MALICIOUS

PDF

39.3 KB Created: 2020-09-14 23:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adf704d9617d15e10848b859c56b01c8 SHA-1: b24a2a88350f490906a8bae89e197d9cdc0b20a4 SHA-256: c2c4fed10ff88c6302f6daedd9d0bda6701250cef61dd3c73b01e4e4840c92f8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, ttraff.me, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Kwal paint color pillar' and the malicious URL, suggesting a lure to a malicious site. The presence of numerous PDF links and a malicious redirector indicates a phishing or redirection attempt.

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.me/pify?keyword=kwal+paint+color+pillar
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/35571862406.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/46792251792.pdf
    • https://cdn.shopify.com/s/files/1/0431/0532/1109/files/bopatoxaxukajanixe.pdf
    • https://static.usrfiles.com/ugd/decf6f_d0958ec8ea1343a28000ea26707a9736.pdf
    • https://static.usrfiles.com/ugd/0010c8_336e313101e444faa8f547a3d01ec078.pdf
    • https://static.usrfiles.com/ugd/3e87bf_7a8159b2b24d460bb1ea4d188d418ea2.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/putiweluviv.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/math_studies_ia_examples.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3798/files/63644737608.pdf
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/53079753922.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/copy_file_sang_word.pdf
    • https://cdn.shopify.com/s/files/1/0434/6576/9113/files/14291920596.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0497/files/dokek.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f61.bin
74df1ef576f96ae2f044ee1ec44c80c4b55b9b4f4b402c7eba368f2ef3ac6eb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F61 4480 bytes
font_01_sfnt_off00005ea3.bin
b634f55ed9a3c8d08ad0f015e902b26b6acb832c8cf5e0344b2186b008a9a134		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 10532 bytes
font_02_sfnt_off00008299.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8299 4324 bytes

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