Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6c07416b12dae0…

MALICIOUS

PDF

46.4 KB Created: 2020-08-31 04:54:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 561917774360d52c2cd2a6439f46447f SHA-1: a76bb23a37ee7b99061e4553d5b065bfe9930f7c SHA-256: ca6c07416b12dae0ae6c7612257d54ea8f1e1830d4d93f9c6a7af0e97776ea22
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=bobcat+863+repair+manual'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the first identified as 'https://cdn.shopify.com/s/files/1/0433/1647/8110/files/jatibudamidafop.pdf'. The document body, though heavily obfuscated, contains text related to a 'Bobcat 863 repair manual', suggesting a lure to entice users to click the malicious link.

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=bobcat+863+repair+manual
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/jatibudamidafop.pdf
    • https://cdn.shopify.com/s/files/1/0429/7801/7443/files/futuvuzilevagaxabopolom.pdf
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/vubozetekobatix.pdf
    • https://static.usrfiles.com/ugd/99afdc_edd686b303d94ac1b090a3708e1183d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_2df6c566e62b470cab6cedf5e051cdec.pdf
    • https://static.usrfiles.com/ugd/04e6f9_8db0b4c2529a44a0b2d3559391a4e58b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1b405fb8ba84b7eadd8756f7b612aad.pdf
    • https://static.usrfiles.com/ugd/89064d_63f54950e3864a2c8aa839acf69e06a8.pdf
    • https://cdn.shopify.com/s/files/1/0428/3524/7271/files/homelite_chainsaw_manual_43120.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/alien_isolation_can_you_kill_the_alien.pdf
    • https://cdn.shopify.com/s/files/1/0436/0493/4818/files/betamogomagipomexonim.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8483/files/91631293741.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/biwojesezetunuriladax.pdf
    • https://static.usrfiles.com/ugd/b8c837_cfa4bfd4d8014aec97212927136faeb3.pdf
    • https://static.usrfiles.com/ugd/7f16bd_8e79fbc385414d2aa10024481fbf2eb0.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_off00006a3a.bin
d9d6dfeb4e914d53f4f058525e56e15ea952e66dd9812add29f86be6f48fd672		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3A 5604 bytes
font_01_sfnt_off00007d17.bin
f67d5faa76763489092c2301c82ad19ace19a064cc8044201b5d6bc1075df382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D17 15588 bytes

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