Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc1e28e6d053db7…

MALICIOUS

PDF

45.3 KB Created: 2020-08-06 09:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be54e6410f9c89fa5773dd9776ad8890 SHA-1: 0f4533a1803980efd75638ba533340d05acd714d SHA-256: 1cc1e28e6d053db76803737cfebc2bed410cfc41ec33b43077a763f46c8f9ee7
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains references to a 'Porsche 911 buyers guide pdf' and includes the malicious URL. The primary intent appears to be redirecting users to malicious infrastructure via the ttraff.ru domain, likely for further exploitation or credential harvesting.

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.ru/pify?keyword=porsche+911+buyers+guide+pdf
    • http://files.lakecountyrecovers.org/uploads/1/3/0/7/130740110/30c115a75.pdf
    • http://files.scalarmanufacturing.com/uploads/1/3/1/4/131437724/95938b.pdf
    • http://files.zphibmuzeta.org/uploads/1/3/1/8/131856636/fimogare-ketatotaja-jowijawukolakof.pdf
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/44534225050.pdf
    • https://cdn.shopify.com/s/files/1/0434/2621/8136/files/99332960239.pdf
    • https://cdn.shopify.com/s/files/1/0432/5854/4292/files/kujet.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/ponozifujapurekas.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/air_force_xy_group_previous_year_paper.pdf
    • https://cdn.shopify.com/s/files/1/0428/6434/5255/files/55267807107.pdf
    • https://cdn.shopify.com/s/files/1/0438/0295/1842/files/morudifagezofosutiwepa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/98251942696.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8118/files/langman_s_medical_embryology.pdf
    • https://cdn.shopify.com/s/files/1/0438/1209/4109/files/debit_voucher_format_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/bopani.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.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_off000071d6.bin
9a8543c6d3d62748c1d560d489f51443c220ee34d8d7bd7aeafd27b2a6cceb8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D6 5628 bytes
font_01_sfnt_off000084fb.bin
3704b626b871032629d9463b63cd756addc3b910d68089a29d92c404430fc8bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84FB 10352 bytes

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