Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e104dffc0d3bee2…

MALICIOUS

PDF

54.0 KB Created: 2020-08-29 10:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6587ffc46ddb6cde9fe50034dba407a1 SHA-1: 411a475b78fc96d81fd943771a33f92b9036b44c SHA-256: 4e104dffc0d3bee2be20f49ab5d569dc82768a43c2f26441c25980a458741761
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document body text and embedded links suggest a lure related to 'Over the garden wall torrent', aiming to trick users into clicking the malicious URL. The PDF also exhibits characteristics of a link farm, distributing numerous links to external PDFs, many of which are hosted on static.usrfiles.com.

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=over+the+garden+wall+torrent
    • https://static.usrfiles.com/ugd/b8c837_f329b5f7ea484bd3ab3e275ced572be1.pdf
    • https://static.usrfiles.com/ugd/b8c837_1aeee22203bc4f41a0a7448d39c42fe8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f602e6d0c98f4ab48961cb3c154c89d3.pdf
    • https://cdn.shopify.com/s/files/1/0433/7179/0494/files/java_gui_source_code_examples.pdf
    • https://cdn.shopify.com/s/files/1/0440/2289/0646/files/cognitive_performance_attentional_control_theory.pdf
    • https://cdn.shopify.com/s/files/1/0429/6930/1151/files/filiduxozojedixum.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f270386712642d7ab246af03b1606e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_99c392296dbf4d24ac4d164e98b1cf7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b30317aaa5564d66978070745cb83036.pdf
    • https://static.usrfiles.com/ugd/b8c837_85d4b6f958204b24b3f2a9278f2e0a7a.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_off00006798.bin
6dd346edde6b513ede072e78fb7c78aa4380fb37155e106ca02975830e13e6c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6798 6184 bytes
font_01_sfnt_off00007cb2.bin
acd450dc35fe6fc299797bc7cfd45357c7d6b2c5d2b67dd0b7925c87980b5bb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB2 5088 bytes
font_02_sfnt_off00008e08.bin
56aab820b277fdf963b63e44449d48a133a00416359e3e985ce6bc113c31a6dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E08 1852 bytes
font_03_sfnt_off000096f9.bin
20d13260ea8c648886aa75db8a0c202ddf41ab05957eee9ae172988a65dff991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F9 16648 bytes

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