Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9514f63418874d2…

MALICIOUS

PDF

35.8 KB Created: 2020-08-29 14:14:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4675e12993e585feb5217c721519c33 SHA-1: 604533e04739b0ed62fa0de4acce0698d4440a84 SHA-256: e9514f63418874d2ed17c9857854fa4fe0053161f68d13c64f888c32d068073b
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for watching a movie online, combined with the wkhtmltopdf application name. The presence of a malicious redirector and a large number of embedded links, some pointing to Shopify, suggests a campaign to drive traffic to malicious sites, potentially for phishing or malware 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.com/wix?keyword=bareilly+ki+barfi+watch+online
    • https://cdn.shopify.com/s/files/1/0449/8967/7736/files/math_101_kfupm.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/novikimibenejigonam.pdf
    • https://cdn.shopify.com/s/files/1/0437/0199/3622/files/23279704645.pdf
    • https://cdn.shopify.com/s/files/1/0432/6732/6110/files/telola.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb83d719e33b44a686e30bb87ddaa843.pdf
    • https://static.usrfiles.com/ugd/b8c837_88f9f808c7174413afa36194e9306ed1.pdf
    • https://static.usrfiles.com/ugd/b8c837_52b1f7723aae4e51b8b7a0f5db87dec4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/explorations_in_core_math_6th_grade_answers.pdf
    • https://cdn.shopify.com/s/files/1/0462/8506/2304/files/68599270627.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/60667434434.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/losujexavizojovereja.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_off0000501d.bin
77abe89696e18697c1be9175946d431b78a8f8493c82d5241f43aa00c1ac2f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x501D 5240 bytes
font_01_sfnt_off000061fe.bin
a3a82910eaca4a19a8d349a28bd66cbba80237217b339426d18c44a399a10d84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61FE 9516 bytes

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