Malicious PDF — malware analysis report

Static analysis result for SHA-256 51abada8a079d541…

MALICIOUS

PDF

42.9 KB Created: 2020-08-14 03:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 595c38ed04d2a3685a8eae3bbf113d85 SHA-1: 1989a7dec6331e29e6a409d2ae45d095e5aede01 SHA-256: 51abada8a079d5413a0b44945ede8d112365665d51dd8daaafc286e536a0618e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a link to known malicious redirector infrastructure at `ttraff.ru`. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to temperaments, likely intended to trick users into visiting malicious sites. No scripts were extracted, limiting further analysis of the payload.

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/wb?keyword=temperamentos%20sanguineo%20colerico%20flematico%20melancolico%20pdf
    • http://files.cybelesings.com/uploads/1/3/1/1/131164355/5091700.pdf
    • http://togebido.gracedesignliving.com.au/uploads/1/3/1/3/131381428/f204c98.pdf
    • http://welofok.management101.net/uploads/1/3/1/3/131380429/2468644.pdf
    • http://mawik.580california.com/uploads/1/3/1/3/131384244/857668.pdf
    • http://files.enderbycontractors.com/uploads/1/3/1/4/131407278/1504428.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/apollo_munich_health_insurance_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7503/files/14065498014.pdf
    • https://cdn.shopify.com/s/files/1/0434/1409/3986/files/mathematical_statistics_with_applications_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/0426/3585/files/free_brochure_maker.pdf
    • https://cdn.shopify.com/s/files/1/0428/9160/8227/files/3765170628.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/volume_booster_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/70043790547.pdf
    • https://cdn.shopify.com/s/files/1/0437/6431/8359/files/tidojazaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/61718316620.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/fawoxujovo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6139/3046/files/vba_excel_save_as_and_email.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_off000066bc.bin
0091d0eef384583517cd2cca9bb2a3231242f7f3251ae915b34d61a3058a2c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BC 5424 bytes
font_01_sfnt_off00007911.bin
1efb19e9ac9997f0090d5df705fbb9b4c60e7f8e15d8b025e8b3448a285c4acb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7911 10860 bytes

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