Malicious PDF — malware analysis report

Static analysis result for SHA-256 86bcbd261e2316fb…

MALICIOUS

PDF

39.3 KB Created: 2020-08-31 04:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43130b83f613d027d17e3d9b9f2a150e SHA-1: f3cb38acc62c008c39804388b3eb75edecdac622 SHA-256: 86bcbd261e2316fbac04cdb486111822217bbf5abdb444f2fa1990cc3ab9f26d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary malicious URL identified is https://ttraff.me/wix?keyword=abhimanyudu+songs++telugu+naa, which is likely used to obscure the final destination of the attack. The document body itself contains garbled text and some of the URLs, suggesting a potential lure or obfuscation technique. No scripts were extracted from this sample.

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.me/wix?keyword=abhimanyudu+songs++telugu+naa
    • https://cdn.shopify.com/s/files/1/0458/6435/3945/files/lewofo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4122/4869/files/guided_astral_projection_hypnosis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/27641628416.pdf
    • https://cdn.shopify.com/s/files/1/0437/0792/4635/files/html_form_builder.pdf
    • https://cdn.shopify.com/s/files/1/0433/9744/7831/files/calculus_by_thomas_finney_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/mukefexamaniza.pdf
    • https://cdn.shopify.com/s/files/1/0447/9614/9921/files/25854306804.pdf
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/gonudimudelikax.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_b80e1bd9fa3b4a0caa6fe2eb26e8b85b.pdf
    • https://static.usrfiles.com/ugd/b8c837_95d3cb5d56764b24be6e54d0e39ab094.pdf
    • https://static.usrfiles.com/ugd/b8c837_13c6e15a2bbb44e0960c249ea6c64255.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gadawatozuwagujezudoru.pdf
    • https://cdn.shopify.com/s/files/1/0434/0711/4391/files/91446037664.pdf
    • https://cdn.shopify.com/s/files/1/0432/4425/7442/files/84473913983.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2072/files/crystal_oscillator_operation.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_off00005318.bin
af14c4f984d9419e6532eb7a5d7599f8a04ceda3862793c78a44f7ccca04fc9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5318 5372 bytes
font_01_sfnt_off00006534.bin
f6c6ec6ce1ee37d8f39dde902f19d0b1b81eabf863e7d5743487a4ea13cf1b19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6534 14036 bytes

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