Malicious PDF — malware analysis report

Static analysis result for SHA-256 767dc76a7cec8603…

MALICIOUS

PDF

64.9 KB Created: 2020-08-23 00:57:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70203d07503bc78b828168cdd4361527 SHA-1: 37837f29010bdbbb19c3a3ee998694367c50f527 SHA-256: 767dc76a7cec86032c8d25f4c8f6496c85594d552e09e007b09f787e65843809
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm containing numerous external PDF links, with one prominent link pointing to a known malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=maplestory+2019+reboot+training+guide. This suggests an attempt to lure users to malicious content through a deceptive document.

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.cc/pify?keyword=maplestory+2019+reboot+training+guide
    • http://files.jsptacek.com/uploads/1/3/1/6/131636941/8142766ef6ba.pdf
    • http://files.thearsenalyankee.com/uploads/1/3/2/6/132696154/ea0a45dc1.pdf
    • http://files.bncbocaraton.org/uploads/1/3/0/7/130775634/ruzidatuliropedexe.pdf
    • http://files.stagnarobrothers.com/uploads/1/3/1/3/131381602/dubamaje_dotines_xadavizofavamus_lomosulegew.pdf
    • http://files.havencovecustoms.com/uploads/1/3/0/7/130739225/rusozup.pdf
    • https://cdn.shopify.com/s/files/1/0436/6126/3001/files/18671897576.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/ca_form_568_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/vifululodumadatuvulojaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/fidiroriro.pdf
    • https://cdn.shopify.com/s/files/1/0436/8701/8649/files/20417915480.pdf
    • https://cdn.shopify.com/s/files/1/0434/7078/2614/files/fegifewerotupeso.pdf
    • https://cdn.shopify.com/s/files/1/0440/1951/5557/files/guzakigexoziv.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/20515437480.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/direct_tv_remote_programming.pdf
    • https://cdn.shopify.com/s/files/1/0436/7178/1526/files/xajegusamufen.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/
    • https://cdn.shopify.com/s/files/1/0440/1951/555

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b3c.bin
33811bce552780f1d3eab35952503af6ba86838cb9b79c3fee04840344688cbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3C 5740 bytes
font_01_sfnt_off00009ece.bin
aeb06a12600d40a46e897c21515733091e3f517e857c57b58bd2f48468d241de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECE 16088 bytes
font_02_sfnt_off0000d074.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD074 16092 bytes
font_03_sfnt_off0000e53b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE53B 4324 bytes

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