Malicious PDF — malware analysis report

Static analysis result for SHA-256 edae0e23a1c8114e…

MALICIOUS

PDF

52.3 KB Created: 2020-08-31 03:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60b162150b9929a2cab1dd3292d66ca6 SHA-1: 871d495d3d40f9e9b31ca05edbde638dd56b77c7 SHA-256: edae0e23a1c8114e6b05871226adf3bcf279b7acc51e69d504d528e202abc3f7
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 one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. Another heuristic flags a link to 'ttraff.com' as a known malicious redirector. The document body, though heavily obfuscated, contains a reference to 'the wolf chinese drama' and the URL 'https://ttraff.com/wix?keyword=the+wolf+chinese+drama', suggesting a lure. The primary attack pattern involves directing users to potentially malicious external sites.

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/wix?keyword=the+wolf+chinese+drama
    • https://static.usrfiles.com/ugd/de3d83_cb30cc52bcf64e73a7c41c5f938cb572.pdf
    • https://static.usrfiles.com/ugd/b8c837_03e43f3c253b4dedb96b00dbd9981e3e.pdf
    • https://static.usrfiles.com/ugd/98e298_25714831c49947a48ad5d4609d41e7a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_2feb2f00adbc4d52b2ca40b7817f0849.pdf
    • https://static.usrfiles.com/ugd/48f461_4034e7888c3944d89768cc489e636cf1.pdf
    • https://static.usrfiles.com/ugd/e5412a_401dff06a7ce4fd791ac2e5f10b1a0bb.pdf
    • https://static.usrfiles.com/ugd/7e6083_f2c0ba78f61e4b25b8bc102f36508c65.pdf
    • https://static.usrfiles.com/ugd/b85eb0_09eea5580e88476d96f4683231c9b12d.pdf
    • https://cdn.shopify.com/s/files/1/0432/9259/0236/files/rectangular_form_to_parametric_equation_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/bimesejejuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/8161/3987/files/2012_camaro_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/batafujupuzogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/mozemixupajedewano.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/lulef.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/tuesday_with_morrie_summary.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7118/files/tomcat_server_for_netbeans.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.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_off00005ddd.bin
f647072ad768d0b7cd8a6c5c751862f8099a0d50e4f6b4ad1c785e37c4599fb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDD 15112 bytes
font_01_sfnt_off00008ed0.bin
330c22bf86ec3053858df8e70139e1084417e07f2825a7ba245897715f46c077
pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED0 5304 bytes
font_02_sfnt_off0000a0b6.bin
7c3c10f1da7619c4b023f123786ae860135a61585d55691e7061fe0c4d8419b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B6 10264 bytes