Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de4d7a16b7a5c37…

MALICIOUS

PDF

56.0 KB Created: 2020-08-28 05:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2015faa9b66d54630d98e2e2f4b7094 SHA-1: e809f4ef7a742c5b10650c9ad5e523ee3d97e012 SHA-256: 4de4d7a16b7a5c3792e7da2b42d3a778fb85c7ea45a2c09ee21956b25b4b5508
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link farm and a direct link to a malicious redirector, disguised as a guide for Minecraft command blocks. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates the primary URL leads to malicious infrastructure. The 'SE_LOLBIN_RUN_COMMAND' heuristic suggests that the document may also contain instructions for executing commands, likely to facilitate further malicious activity. The presence of numerous external links, as flagged by 'PDF_SEO_LINK_FARM', is a common tactic for distributing malicious content.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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/pify?keyword=how+to+use+command+blocks+in+minecra
    • http://files.bookshelf-bookshelf.com/uploads/1/3/0/7/130740138/7196708.pdf
    • http://files.theconfidencefactorforwomen.com/uploads/1/3/1/3/131380440/rozarejixebol.pdf
    • https://cdn.shopify.com/s/files/1/0431/6545/0389/files/logitech_remote_setup.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/29667196640.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7287/files/82637881321.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/33121442670.pdf
    • https://cdn.shopify.com/s/files/1/0430/7828/7513/files/jaxipologonasisalawoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/dosizixuzozefelo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/bootable_pendrive_cmd_commands.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/bulojosovave.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9735/files/johnny_appleseed_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/noruzuzeliwuje.pdf
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/gauntlet_slayer_valkyrie_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/60074335362.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/diy_triangle_garland_template.pdf
    • https://cdn.shopify.com/s/files/1/0450/8627/7784/files/38866431652.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/76135684364.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086f2.bin
4643d7d11da8ee82d7ba1b71358c7a3e0da016bc4d2516d1219fa84deb7ccdf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 5344 bytes
font_01_sfnt_off0000990f.bin
3e556d25fbaa1602cc4878373db5af06a0db55d91f5c0ae0b8e72f2af7f8494f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x990F 10636 bytes
font_02_sfnt_off0000bda1.bin
dd8a01d90701d8c526b8b1392db5416ae5d05341aab0cdd5840b3a76f460e31d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA1 16200 bytes

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