Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6a9e65be45db7e5…

MALICIOUS

PDF

32.3 KB Created: 2020-09-03 15:21:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a83216ca81c5cd811649c9500f4253eb SHA-1: 153984ba2588e1ff11cbfc261ccb6fd4262b06f9 SHA-256: d6a9e65be45db7e5b559307748d07589c0e7b3db0e401e7976d0e68e68b3f289
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL, https://ttraff.me/wix?keyword=acr+contrast+media+manual+2017, is embedded within the document and likely serves as the initial point of compromise. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of numerous benign-looking PDF links suggests an attempt to obscure the malicious intent or to leverage SEO techniques for distribution.

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.me/wix?keyword=acr+contrast+media+manual+2017
    • https://static.usrfiles.com/ugd/1decf9_2dcbbd4d0e8548e08baa4c5f3cd0af8a.pdf
    • https://static.usrfiles.com/ugd/2f7815_edccce4fe56940b898993b5d79214e41.pdf
    • https://static.usrfiles.com/ugd/5ad03d_7dc4643bbdd043c6acb90561f5ecb01d.pdf
    • https://static.usrfiles.com/ugd/e4a001_11dcebcddbce4f738064bdf0ed1bf05d.pdf
    • https://cdn.shopify.com/s/files/1/0440/8098/8310/files/49024567482.pdf
    • https://cdn.shopify.com/s/files/1/0433/8135/8753/files/29899763803.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/16767514263.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0448/4674/3709/files/2007_toyota_tacoma_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/9713/6030/files/buzutam.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_off00004094.bin
89afc484d3dd2dcd1ffdaac320a72968da88fd10a5e19b3c49390e42a536b7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4094 5480 bytes
font_01_sfnt_off0000532a.bin
dba46dd0e0a92cd535c35f48c010582f09feffc50270b004c75fc6ba277be8ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x532A 9796 bytes

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