Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdc3c80da5f18cbc…

MALICIOUS

PDF

46.9 KB Created: 2020-08-30 15:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e7df160f0adb43f7a77b5d5556bae62 SHA-1: 6bb4902372d3cb3a47df291c04ed31f8dba90aa7 SHA-256: cdc3c80da5f18cbc2fcc211058b7c713b416792ec81142f81dee10fed713d3a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service. One of the primary links directs to 'https://ttraff.ru/wix?keyword=whirlpool+duet+sport+washer+error+co', which is flagged as a malicious redirector. The document also exhibits characteristics of an MFA or one-time-code harvesting lure, suggesting a phishing attempt. No scripts were extracted, but the presence of numerous links and the MFA lure strongly indicate a phishing or redirection attack.

Heuristics 4

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.ru/wix?keyword=whirlpool+duet+sport+washer+error+co
    • https://static.usrfiles.com/ugd/dfb5f8_72c0304fbe5d48eca3c28f8e2690b11f.pdf
    • https://static.usrfiles.com/ugd/96768c_eff390aa7f5b453890bfc7863db7a466.pdf
    • https://static.usrfiles.com/ugd/34e21e_7d17c9e473d849fc8ce6a076b93c2fc1.pdf
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/zorutoduburesuzozefazela.pdf
    • https://cdn.shopify.com/s/files/1/0441/1251/1128/files/14273275588.pdf
    • https://cdn.shopify.com/s/files/1/0438/2323/5234/files/embedding_image_html.pdf
    • https://static.usrfiles.com/ugd/d4a9d6_4a90a900927f43b5b141459da1af8669.pdf
    • https://static.usrfiles.com/ugd/2c8d66_57b97ebb2adf42249e58baba0a6b5f8c.pdf
    • https://static.usrfiles.com/ugd/b8c837_da5208c95279464f8ddee75f4edd6cd7.pdf
    • https://static.usrfiles.com/ugd/f46427_ae1ebf0d37044c97ad7cda22dfc20980.pdf
    • https://static.usrfiles.com/ugd/b8c837_72afa1aaed5841bea49eba5d42728094.pdf
    • https://static.usrfiles.com/ugd/345929_48610669bdcd4b569d1c51b2872086ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f4fc07be6a1477abbfa1c06352bef88.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_off00006d6e.bin
76737fb92c5a5e1dbf7ddb3deb0da7224b5cf5da3f53bd27d8efd268757b4d5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6E 5040 bytes
font_01_sfnt_off00007eb7.bin
eeeb7265593460304e22feda6fa41a023ca47c8c9f7dd80ce57f2f82fc766870
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB7 9868 bytes
font_02_sfnt_off0000a085.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA085 4324 bytes