Malicious PDF — malware analysis report

Static analysis result for SHA-256 e015a9981ef49cd7…

MALICIOUS

PDF

33.8 KB Created: 2020-08-17 00:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ca5b3caa7e207f374ec1e644bb58cc1 SHA-1: 22fc3b427c7994f2fc71bb5fe02dbd849346e290 SHA-256: e015a9981ef49cd7396f31920ace764762dd9a9f636ce16e2e6cb6517c560496
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=clarity+john+mayer+piano+sheet+music'. It also contains a link farm heuristic, with numerous external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious redirector URL and several benign Shopify URLs, suggesting a lure to a malicious site disguised as a document download.

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=clarity+john+mayer+piano+sheet+music
    • http://files.trewsthoughtfulspot.com/uploads/1/3/1/6/131637374/keponugonuvubimir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94766401197.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/91946955438.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/20638539869.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/2016_challenger_scat_pack_manual_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/jemowaxoweduviwapuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/nevari.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0428/4484/8295/files/86349750170.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/kituvexejuletalanido.pdf
    • https://cdn.shopify.com/s/files/1/0431/5358/8390/files/patupimamevenuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/povasagunav.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_off0000461b.bin
1499110656a2b5f0fb391e2a0c62cc46783f319de4c7470d9fb869c21802d081		 pdf-font-stream PDF embedded font (sfnt) at offset 0x461B 5256 bytes
font_01_sfnt_off000057d8.bin
e01a3e8da94b0405f7b3ea30689d04884d1aeb27660b9d07882190fce7a482e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D8 10128 bytes

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