Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d345825f61e797…

MALICIOUS

PDF

47.9 KB Created: 2020-09-02 01:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e81ad42f5640b77179e28276b210b82 SHA-1: 58407ba828ff705aec3f807455a09577c4ce17a2 SHA-256: 40d345825f61e7977fb420083705a11b3ebd02669e996ecd6f6c4817338687df
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/wix?keyword=deduction+guides+c%252B%252B+17. This suggests a phishing or redirection attack aimed at luring users to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer the attack pattern.

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.cc/wix?keyword=deduction+guides+c%252B%252B+17
    • https://static.usrfiles.com/ugd/67f5f7_3c1b9d92c2e24c3895cbeb96c2cd0a10.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_6bf403c14727416fa8add0de0f50618e.pdf
    • https://static.usrfiles.com/ugd/b8c837_e023013883454fd4b69c07d462d57702.pdf
    • https://static.usrfiles.com/ugd/2f7815_bb72ae996be94b979facdcefec32b3f4.pdf
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/polk_county_attorney_s_office.pdf
    • https://cdn.shopify.com/s/files/1/0431/5591/4908/files/peterson_and_patch_funeral_home.pdf
    • https://cdn.shopify.com/s/files/1/0448/0057/3601/files/demip.pdf
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/mayon_volcano_pyroclastic_flow_hazard_map.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2645/files/91271478950.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/2017_siem_gartner_magic_quadrant_report.pdf
    • https://cdn.shopify.com/s/files/1/0464/9415/4904/files/53576238682.pdf
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/2976941891.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/18511799064.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_off000067db.bin
3552320e34b91df1bfb9c756874b8954182b2438032c7bf410a0218d278afcc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67DB 4780 bytes
font_01_sfnt_off0000783f.bin
0c8ad5a843779c8843b40dfadb571410eb27576079341e1d77f79ffdbd58592b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783F 14264 bytes
font_02_sfnt_off0000a52d.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA52D 4324 bytes

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