Malicious PDF — malware analysis report

Static analysis result for SHA-256 9293e1fd766cfdc5…

MALICIOUS

PDF

50.0 KB Created: 2020-09-01 10:38:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 047ae366b2910d8ff05cb2ca994e04be SHA-1: 1f543960a0d719930af4e3cdb034a9a6a4a215b3 SHA-256: 9293e1fd766cfdc5270984976a18acd2791dc0f2cf098de173fbe4a7874cae09
128 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with one URL pointing to a known malicious redirector. The presence of a 'download button' heuristic further suggests a social engineering attempt to trick the user into clicking the malicious link. The document body contains garbled text but also includes the malicious URL and several benign Shopify URLs.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=brush+pen+lettering+practice+sheets+free
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/31782640022.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/dikajuxifek.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9426/files/xamitewonubevuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/9588/2918/files/laporan_pendahuluan_hernia_inguinal.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_334b8410983747a7a2dffdfdbccb6e1e.pdf
    • https://static.usrfiles.com/ugd/9c0842_d064667f146f4d159e72aca61174898f.pdf
    • https://static.usrfiles.com/ugd/f459ea_d821f6c3c4ce471183c4c9222c111437.pdf
    • https://static.usrfiles.com/ugd/ce5d00_4c8faeef58ce417c890249e6e7c7d0cf.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/ecommerce_website_development_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/xumamajagavavilipasoped.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78986196578.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_off000061e1.bin
e5468b1f3ccc7146bb06d46ea72b007778f913cad614887643648184b09e5a8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E1 5096 bytes
font_01_sfnt_off00007334.bin
dfc237d6f9211744819c2df511f06229ce61e2bb4d14ec89e48eaa92e9d1520d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7334 10552 bytes
font_02_sfnt_off00009706.bin
8a9e4029851f91a230108fad4a4eb936f0954d84447a8ebe566ddbc566f9ac3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9706 16328 bytes
font_03_sfnt_off0000acbe.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACBE 4324 bytes

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