Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e27156fcee0e552…

MALICIOUS

PDF

46.0 KB Created: 2020-08-31 16:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f31ff20a9093dd5f93b23fe05fb4909 SHA-1: 10a879d766126d9c90c305628e2c2fad818ad524 SHA-256: 9e27156fcee0e55206486da250b647c0e80ff3478a05e723c7465107d91c562d
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.cc/wix?keyword=sheets+of+plywood+size', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of numerous links, including the malicious redirector, indicates an attempt to lead the user to a compromised or malicious site.

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/wix?keyword=sheets+of+plywood+size
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/52759150712.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6641/files/2012_ford_escape_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/8059/6121/files/avg_antivirus_pro_apk_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/tozajorafalorad.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1304/files/muvesakopazilaregoduv.pdf
    • https://static.usrfiles.com/ugd/b8c837_f24b2a8162de48dea51353511b9fd9f4.pdf
    • https://static.usrfiles.com/ugd/1849a1_5ce63fc61e2c4c1488fadcf55144e620.pdf
    • https://static.usrfiles.com/ugd/74a852_7bf6548e5c734dac8d64ca419bb0f5d7.pdf
    • https://static.usrfiles.com/ugd/3d0627_529c49cacbe94065a1f99786f9a8012c.pdf
    • https://static.usrfiles.com/ugd/b4a829_d87efdc9989a45af96a83d7bd8a4d6e6.pdf
    • https://static.usrfiles.com/ugd/21e6f2_2d03f2d3969d4cbe82bd14025f5e2c04.pdf
    • https://static.usrfiles.com/ugd/3b7182_dd2d589aab4a464786dc0a91cf0636f8.pdf
    • https://static.usrfiles.com/ugd/9b5f63_73c09acc1a7548179c7c75ffcd4d62c5.pdf
    • https://cdn.shopify.com/s/files/1/0431/6430/3516/files/97927833893.pdf
    • https://cdn.shopify.com/s/files/1/0434/7500/9696/files/calligraphy_practice_sheets_tombow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62092070186.pdf
    • https://cdn.shopify.com/s/files/1/0438/1750/0834/files/blackberry_classic_chy_android.pdf
    • https://cdn.shopify.com/s/files/1/0435/3818/6392/files/55021204740.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_off000076c6.bin
ad17f1ddef8db36b84b97ee223c55db73a73a0ce6d392993af44cd4d49b5a5e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C6 5168 bytes
font_01_sfnt_off0000887e.bin
56e99ab6174146db4d4eeaaddb3182c24bf330bb39952ffc47d7ebebbfeaadb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x887E 10128 bytes