Malicious PDF — malware analysis report

Static analysis result for SHA-256 c348d7b9049973fe…

MALICIOUS

PDF

45.7 KB Created: 2020-08-31 16:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46d9334aebbcf290b4361282be4c48a1 SHA-1: 77dae6eef8a682e2825b42899bd2d6a055990c72 SHA-256: c348d7b9049973fe44a6cca0f9b776e379fabf2cc9caf8004d3deb151b2e7339
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of embedded links, indicating a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=achyutam+keshavam+krishna+damodaram+female+ringtone. The document body contains garbled text but also includes the same malicious URL and a list of benign-looking URLs hosted on static.usrfiles.com, suggesting an attempt to disguise malicious activity within a large number of links. No scripts were extracted from this sample.

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.ru/pify?keyword=achyutam+keshavam+krishna+damodaram+female+ringtone
    • https://static.usrfiles.com/ugd/c75f60_f8d8c7b93ab9434b9d68288bfcaf2115.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7d901285f5b407ca264dc20b77830cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fd6dde36e6c4f75972e0fb7528a641d.pdf
    • https://static.usrfiles.com/ugd/8acad3_3933fd8fd9a548bc9d5230cb8dcacd64.pdf
    • https://static.usrfiles.com/ugd/b8c837_107866949d12479e8bdfa877311bbf5b.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8d5142e7c894a51bdee1eaed8d5c0eb.pdf
    • https://static.usrfiles.com/ugd/83b1b3_b7e9e867bbab4e47a8609225326b2bf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_6da63428f93e4d8aa7d384ada091b80b.pdf
    • https://static.usrfiles.com/ugd/cafc24_ea1e92418c09412cba79e6eb9203a29b.pdf
    • https://static.usrfiles.com/ugd/8ab72e_591fc7489202455aac26635e2773aecc.pdf
    • https://static.usrfiles.com/ugd/f65518_bbe800e42f75448180d31dec2abfa1f4.pdf
    • https://static.usrfiles.com/ugd/5ecadc_e4310750a5b84fa1a05b7e53ba3b1f69.pdf
    • https://static.usrfiles.com/ugd/b8c837_3071b7d37d304df2b872c21493b74e10.pdf
    • https://static.usrfiles.com/ugd/314c35_2220842c6d43471899446f935f55d712.pdf
    • https://static.usrfiles.com/ugd/daca0d_c669b6af1bf94400900316409bcdf709.pdf
    • https://static.usrfiles.com/ugd/cac9e4_02cb135aed44447186fe86e2561732ec.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ba6.bin
633f3cd3224cca1bdbee27b1e8cac009986d396cc669d787f12353caf0bb8d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA6 5532 bytes
font_01_sfnt_off00005e5d.bin
064b5d51139e2c4bf73763b5b4d9c50a01fc04c58943751a81038f1adf2bd762		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5D 9744 bytes
font_02_sfnt_off00007fa7.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA7 4324 bytes
font_03_sfnt_off00008da7.bin
8c13ce33b773dbe27bcb78ae6ac320627a70030cdfae0796da046b85ff61179d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA7 7948 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.