Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5cad419371a83ad…

MALICIOUS

PDF

40.1 KB Created: 2020-08-31 14:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9c122c82ea76d65846fc941159e7c52 SHA-1: c47f3d09064c08484d746fdd6be3d91193c49b0d SHA-256: c5cad419371a83ad53e8e0f90d795d82304703949e08ad424134765bcbc13c5a
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to server administration and a URL that appears to be part of a link farm designed to attract search engine traffic. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to create a SEO-optimized link farm, likely to improve the ranking of the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=manually+remove+additional+domain+controller+2008+r2
    • https://cdn.shopify.com/s/files/1/0437/2227/7032/files/dolexojexixob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/danevin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0147/0366/files/osrs_skiller_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/6594/0904/files/kulimimosafubujile.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/itil_foundation_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/college_football_bowl_game_schedule.pdf
    • https://static.usrfiles.com/ugd/10e3af_425f7c13b5a64013b4086224bbce5826.pdf
    • https://static.usrfiles.com/ugd/b8c837_79498a9681a742d5ad474c77ba802910.pdf
    • https://static.usrfiles.com/ugd/23b571_e7d89b3e9faa4506a6f3ae0b3aa0f410.pdf
    • https://static.usrfiles.com/ugd/5ecadc_dfd7458907f54a2abee1f4c4b465a48a.pdf
    • https://static.usrfiles.com/ugd/2f07a1_7d5bc796731147979a45e89bf92a5a7c.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dcf7ec2b9304b93a502b2df4ea6278d.pdf
    • https://static.usrfiles.com/ugd/b8c837_eeceabeff01b4557a1cb6a51ea69f3a9.pdf
    • https://static.usrfiles.com/ugd/f515ca_c0beabda94ba422a85a475d1afd0f0f4.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_off00005d92.bin
efc212710cc171bb147ba6eaf59b8ccb573def8e7fa904114ebbad38b62f4dcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 5540 bytes
font_01_sfnt_off0000706b.bin
0dbf0b07d7f325418826f2a4c4428a48ea14ec48f920f0655f16c518bf8d9d20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706B 10196 bytes

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