Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e3f6294cf5698b…

MALICIOUS

PDF

69.7 KB Created: 2020-08-31 08:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9139a484ba16a642043b9b033b20899f SHA-1: 156f51f4b26c5b3ab7517cb2f879f9ce47c98b9f SHA-256: 38e3f6294cf5698b1bf936c6e10fe621352a35c4591ae23f15eaae7a4f15b246
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=most+common+idioms+in+english+pdf', which is flagged as malicious. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, including one pointing to 'https://cdn.shopify.com/s/files/1/0429/1536/5031/files/18356719322.pdf', suggesting a broader distribution or redirection strategy.

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=most+common+idioms+in+english+pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/18356719322.pdf
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/wibiko.pdf
    • https://cdn.shopify.com/s/files/1/0431/4673/9878/files/40483481128.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/fananadijenodisamozeni.pdf
    • https://cdn.shopify.com/s/files/1/0434/8094/0710/files/hello_goodbye_and_everything_in_between.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_51aee505afe046018cb639765ff9c1e0.pdf
    • https://static.usrfiles.com/ugd/df4650_8832c04510f64346b057e0a77a9852a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7dff08cdc934edf9583b34df90f6ec4.pdf
    • https://static.usrfiles.com/ugd/cc089a_bd72bf0efa154b4cbb051ba2b624f706.pdf
    • https://static.usrfiles.com/ugd/565485_e02f7ba7111344f8807e6e278708003a.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc105667636b409cac439df943fa0c99.pdf
    • https://static.usrfiles.com/ugd/7f16bd_62208aa2c83d455ab68e04b62013a96f.pdf
    • https://cdn.shopify.com/s/files/1/0463/2680/8731/files/gilimitosobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3018/files/44285378619.pdf
    • https://cdn.shopify.com/s/files/1/0434/2625/0917/files/global_lng_report_2019.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.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_off0000c79e.bin
27660478d39d0712f1be2becf49e0bc3b7bc58c9ee0314e584db5bba267d4436
pdf-font-stream PDF embedded font (sfnt) at offset 0xC79E 5056 bytes
font_01_sfnt_off0000d8b1.bin
59de785c2c93a88acdfaa74acd96d301fb0d61f748a078b3205375605353a06e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B1 10192 bytes
font_02_sfnt_off0000fb85.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB85 4324 bytes