Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcaf9016be03b0f9…

MALICIOUS

PDF

44.8 KB Created: 2020-08-31 15:45:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b6abbb8b39cd96682e20d63caeaeeb4 SHA-1: bd5ccccf3588bb56c265508a75427fd88da7c20a SHA-256: bcaf9016be03b0f9dde0f00485e872d206fb2a277eb64a4c3f39fca6b97dc5b0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a reference to 'Metro Exodus best ending guide', suggesting a lure. The file also contains a PDF link farm heuristic, indicating it's part of a larger distribution effort. The primary IOC is the malicious redirector URL, which is likely used to funnel victims to a secondary exploit or phishing page.

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=metro+exodus+best+ending+guide
    • https://static.usrfiles.com/ugd/b8c837_41b445d729604eb491da607c374981f2.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_67a28fb71244412eb60c4cc92e0b7d44.pdf
    • https://static.usrfiles.com/ugd/b8c837_f49eabad86f048a197efaeb994fdb866.pdf
    • https://static.usrfiles.com/ugd/b910ae_683e3742520643dc84015fcb0745d747.pdf
    • https://static.usrfiles.com/ugd/e4a001_7df421cefbf5496e9751b7c1f2c808c4.pdf
    • https://static.usrfiles.com/ugd/b8c837_53563f3050d540fdbe3476f48b28e3ae.pdf
    • https://static.usrfiles.com/ugd/b91566_65be030eba1e459aa81d74158274f7bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_1120cf36c456447ea4535e950cd98174.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f4d09b9fea84cd1b14c3408aa13144d.pdf
    • https://static.usrfiles.com/ugd/3bf302_593cf61a9a0e41a68bb34ddc368c81cb.pdf
    • https://static.usrfiles.com/ugd/3de8a6_2855d428825745d285616109093d8df2.pdf
    • https://static.usrfiles.com/ugd/0047a4_a1bc792a5f124b929061bb84d919f337.pdf
    • https://static.usrfiles.com/ugd/469aea_fe30a3a35cc447338cdf53de536733b1.pdf
    • https://static.usrfiles.com/ugd/b47706_730cdcd7a7c54a4aba6ff7ab1cb22fc7.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_off0000645f.bin
87fd523de16a32fa97e2f73f390dffe1f49041d88995352ca9c329ab6a32e5a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645F 4844 bytes
font_01_sfnt_off000074f1.bin
02f911854694b3a2d57c3a423ae086cd7b0641d1fb29ae534569f2c5205840fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F1 10412 bytes
font_02_sfnt_off0000984f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984F 4324 bytes

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