Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d9d2a0bf7d729e2…

MALICIOUS

PDF

60.5 KB Created: 2020-09-18 06:45:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 045bdc63856c5265ab7b92e9c5d62b00 SHA-1: fa9b2e10676b50420cd3b51986f08584647ae78f SHA-256: 2d9d2a0bf7d729e250b67a0128194741c050fc271c0a0fdc208a26d5c64db476
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large link farm. The embedded URL 'https://ttraff.link/pify?keyword=attic+greek+principal+parts' is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it is the primary lure. The presence of numerous other PDF links further supports the attack pattern of directing users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/pify?keyword=attic+greek+principal+parts
    • http://files.attic956.com/uploads/1/3/2/3/132303235/jajek.pdf
    • http://sivewezi.yourhomey.com/uploads/1/3/1/4/131406893/nokudud.pdf
    • http://timim.msstylistandco.com/uploads/1/3/1/4/131453453/949973.pdf
    • http://files.bctents.com/uploads/1/3/1/3/131380339/repejaziso-desutubuluxopoz-kefofokekewoziw.pdf
    • http://files.nest-of-the-rat-king.com/uploads/1/3/1/3/131380995/4606287.pdf
    • https://a9115b54-3284-4087-b7c2-030156aa65e6.filesusr.com/ugd/7d21c0_be4d29746672432283f6f845bd4715c5.pdf?index=true
    • https://e0aa50ff-2079-4f36-b0fb-273ae9df9190.filesusr.com/ugd/78daac_b787988e3b534f8bb6959cee170873d6.pdf?index=true
    • https://10d2b744-8d44-49a3-8520-0a0f918bfc5b.filesusr.com/ugd/3f0e57_ebc2e14628c344afba6082e8df94b858.pdf?index=true
    • https://ce4c9986-8d0f-4380-8440-b8f076f23c2a.filesusr.com/ugd/dcf311_98eb7c3d362c4fadb58f8ae2d7726274.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/9432/6944/files/92109343260.pdf
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/wenuxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/ketuxeberififoxawil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.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_off00009981.bin
298c8e8ba6c5a21409dedfa4963dddb68debed53f82c8b4c06cda988503680e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9981 5156 bytes
font_01_sfnt_off0000ab21.bin
e6d73cbd1eefe17c1a863ca9e034c73dd73ceab2ecec70fe0fe99c381cebdd54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB21 20116 bytes

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