Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1664376b7d022eb…

MALICIOUS

PDF

112.4 KB Created: 2020-08-02 10:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a04c1eefacf92bc179afd0823449ce4 SHA-1: 9340dce95d0f169719215ca2bd4a217b4792b7a5 SHA-256: e1664376b7d022eb4f3c3ac29cc82c82548e1a091350a1f974a16824155e3ecd
160 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 the URL 'https://ttraff.cc/pify?keyword=pixelmon+ring+target', which is flagged as a malicious redirector. Additionally, the PDF is part of a link farm, suggesting a broad distribution effort. The presence of a 'Password-protected archive lure' heuristic indicates that the user might be prompted to download and decrypt a password-protected file, which is a common tactic for evading initial security scans.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=pixelmon+ring+target
    • http://files.detourla.com/uploads/1/3/1/4/131438111/0b3cb0b0.pdf
    • http://files.theromancollar.com/uploads/1/3/1/4/131438464/8f2c61.pdf
    • http://files.goteamkate.com/uploads/1/3/0/8/130813054/jirunowiris-kerolak-gemekuta-todazunumozuwi.pdf
    • http://files.spiritualgypsysoul.com/uploads/1/3/2/7/132740836/tuxogebit.pdf
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/rejukoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/20591747865.pdf
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/45214340983.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/lubana.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/reguvibatofodusiboli.pdf
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/45976819472.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62386903812.pdf
    • https://cdn.shopify.com/s/files/1/0429/9898/8954/files/bumefemirezugojamazeloba.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/call_of_duty_black_ops_2_walkthroughs.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/82995954638.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f47f.bin
7fbb53ef15de6cdf350f7b87792a9fa8cfd8d4401fe79a44bb35ca4a25427dc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF47F 30500 bytes
font_01_sfnt_off00015310.bin
a550bd881caaaf8a7d7ca95e3e5527ee7af9f8b7bf7e7562286d96af236885d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15310 4896 bytes
font_02_sfnt_off0001639d.bin
dae0f12506c17deaa818396cb86411da2f7a72f10e575d6fda98e021880a3e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1639D 2744 bytes
font_03_sfnt_off00016f48.bin
f30073152c443f12a77b42c6987e4e509de4d6771c40996c113c39390051c5fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16F48 14684 bytes
font_04_sfnt_off00019e3d.bin
7e0863d6dcdfe3ce59f67395a06e5e8634226e44f713773c85e494ff6d119ee1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19E3D 16344 bytes

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