Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9b52d8810b32520…

MALICIOUS

PDF

61.5 KB Created: 2020-08-19 04:05:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68005068b9e71da716a78b20442ee411 SHA-1: a166153405f88f72d0dcb3bfb3fb18e2be078a47 SHA-256: c9b52d8810b325208b597c7b80ad8c9b89a57727aec0f537c6a655aa13717692
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=boboiboy+video++free', which is also present in the heuristics and URLs. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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=boboiboy+video++free
    • http://bivof.rainsweptgame.com/uploads/1/3/1/6/131636725/7ec3947447bb1d.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/44847471300.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/9622065904.pdf
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/pikajusavefos.pdf
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/dynamic_stretching_chart.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9561/files/gta_online_best_apartment.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4695/files/41564277963.pdf
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/geophysical_survey_in_archaeological_field_evaluation.pdf
    • https://cdn.shopify.com/s/files/1/0438/3067/3565/files/48440296067.pdf
    • https://cdn.shopify.com/s/files/1/0435/4909/8148/files/tekavuminekijas.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/jadojitukuvozu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b44c.bin
4a9429708f408b6c37da5cf54fb50dd1d6fd241bf16a30dbafc40cea3c86b921		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB44C 4832 bytes
font_01_sfnt_off0000c4d8.bin
217b9d77010e3ab2ad80d3f6afb6e21cfc7a9071c1e9adf129cb9a70b43373a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D8 10228 bytes

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