Malicious PDF — malware analysis report

Static analysis result for SHA-256 e874bb99a9a033f8…

MALICIOUS

PDF

38.4 KB Created: 2020-09-08 03:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 767d7387fed8330430af33c6f89089da SHA-1: 41ca88be2f8e82812470fc4a6279b79ac55086dd SHA-256: e874bb99a9a033f89169f814df91d8da8ea07e64f30a32393fe3f9e15ef9c558
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'form verification' and a URL that matches the malicious redirector. This suggests a phishing attempt to trick the user into visiting a malicious site. No scripts were extracted, limiting the analysis of further payload delivery.

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.me/wix?keyword=c+form+verification+punjab
    • https://static.usrfiles.com/ugd/e73fea_cec3646b9ada4fa285cd83fef930fb6b.pdf
    • https://static.usrfiles.com/ugd/740d8c_b027ec77f8a74889af29e683bc8088b1.pdf
    • https://static.usrfiles.com/ugd/2f8cea_1eccc06c8ea641ccb77bb38545b40180.pdf
    • https://static.usrfiles.com/ugd/f63f29_5aab4c5b0ec943b4aebf25977efd7dd2.pdf
    • https://static.usrfiles.com/ugd/111c46_74f6cbbfad7b4739aef7db4365c1d55a.pdf
    • https://static.usrfiles.com/ugd/3826db_438306924672445387667f8f4a5eac9e.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/turexigobedetegugivaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1811/7543/files/pekuposoporoz.pdf
    • https://cdn.shopify.com/s/files/1/0461/1332/5219/files/23160711246.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/electrical_circuits_basics.pdf
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/43733081911.pdf
    • https://cdn.shopify.com/s/files/1/0436/9822/5320/files/borovakoku.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_off00004b44.bin
3af6df86ef940605a533d1e5ce4f1e3cca176f4740d3442d4eb4974ac7a5eff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B44 5132 bytes
font_01_sfnt_off00005ca5.bin
1ef33ef969fbf38b9b09fc079b13532d81f48745d71ec506e4e03a46f2ed07a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA5 10048 bytes
font_02_sfnt_off00007f03.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F03 4324 bytes

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