Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4171a67d13f89c…

MALICIOUS

PDF

50.0 KB Created: 2020-08-01 03:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a78d2e3df21a47adb1e8b6f96ccc4e39 SHA-1: d657c26cd4791f05e3b81b4500e7ae7ee4ccfe2a SHA-256: 7e4171a67d13f89c54052a1db5a546796f5029e8604ff02019bf0b74971421ea
150 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection scheme. The primary malicious URL identified is ttraff.com, which is known to host redirector infrastructure. The document body contains obfuscated text and the embedded URLs, indicating a likely attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/pify?keyword=red+flag+emoji
    • http://files.wandapayne.com/uploads/1/3/0/7/130739567/e9f4b5f19c4877c.pdf
    • http://files.marquettemountainskipatrol.com/uploads/1/3/0/8/130874222/39354cb2d2.pdf
    • http://files.robynpforrryan.com/uploads/1/3/1/1/131164281/kixowewetu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/1264999074.pdf
    • https://cdn.shopify.com/s/files/1/0440/6060/6616/files/costco_power_washer.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/85580340193.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/bawarezoxixukovoxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/c_binary_serialization.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/kunuvodozubekexav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rijakilijupefiwopoxafeza.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/dozufeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/94395549643.pdf
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/download_reddit_video_with_audio.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d4b.bin
952ee9c989b98ef5733955957dd23783d1eb9956a810caa5168fadf8cd4703fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4B 5036 bytes
font_01_sfnt_off00006e63.bin
6736ae3b24434b8b95844236dbbb7bbc5a471eccaa29ebbcc01f3eee693a91ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E63 2044 bytes
font_02_sfnt_off00007827.bin
c05e9cebd146ce2d4cb5a9fed137473162c7a52cbb15ddc040173209a7121bce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7827 10948 bytes
font_03_sfnt_off00009d4e.bin
930bdb000e3ab195650edb44e660442ade8ad7f829772209fe4593fbe90c8eb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D4E 16368 bytes
font_04_sfnt_off0000b2e0.bin
79e7d79e3810711925c18a41819865891d5c806d4d3e3ddae6e6a47eaa67db2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2E0 1760 bytes

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