Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2a5b2f60d0dfea…

MALICIOUS

PDF

39.2 KB Created: 2020-09-01 14:06:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8986544171295855d31f6ea4545a53ec SHA-1: e2c61872b73fbe7bbce78a2bd4fedef5771f7c54 SHA-256: bf2a5b2f60d0dfea0318fb7fcb1fcad92441cc54436d85855601ae27a27618d9
120 Risk Score

Malware Insights

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

The PDF file was identified as a malicious redirector and contains a large link farm, indicating a likely attempt to lure users to malicious sites. The primary malicious URL identified is ttraff.ru, which is associated with redirecting users to potentially harmful content. The document body contains garbled text but also includes the malicious URL and several Shopify-hosted PDF links, suggesting a broad distribution attempt.

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.ru/wix?keyword=kidnap+movie+imdb+parents+guide
    • https://cdn.shopify.com/s/files/1/0432/6909/5590/files/sports_bike_images_hd.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/wozikaxezakewubilovirani.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/37753202833.pdf
    • https://cdn.shopify.com/s/files/1/0432/3852/3047/files/bodiwori.pdf
    • https://static.usrfiles.com/ugd/a18aa6_4af46910b75a4b97a8b0447e0235c862.pdf
    • https://static.usrfiles.com/ugd/d78803_d0dd9eb4530f40e09c3a8218e9722555.pdf
    • https://static.usrfiles.com/ugd/99965f_2eb36c6be1a94a8cad5bb3cc1faf791e.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_134354e59bc94d7a833ba3a499e98a14.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f3eccaf156e4af7859294b9918a49ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_27adc5cc3eed4076be5d6a00517034c0.pdf
    • https://static.usrfiles.com/ugd/ce5d00_dc2d375b528c406491db69c5b4bd1936.pdf
    • https://static.usrfiles.com/ugd/e1c37d_d9214f1ad4874b489d7c4460e408adb0.pdf
    • https://static.usrfiles.com/ugd/e1d12c_3973275e0e3d41cd800b63b4403a9934.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/space_engineers_linux_server.pdf
    • https://cdn.shopify.com/s/files/1/0428/7227/5103/files/tetajitikivama.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_off00004d6a.bin
dfc5ff0ae88e960a48a7f49f04a6afc52969a33643da147262fd5376142a6b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D6A 5300 bytes
font_01_sfnt_off00005f56.bin
d368df3330055ebb9c0b729a4fd8577dcc71346b1d025360bb5fd7543c1aaf65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F56 10068 bytes
font_02_sfnt_off000081d7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D7 4324 bytes

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