Malicious PDF — malware analysis report

Static analysis result for SHA-256 af63c362375b0074…

MALICIOUS

PDF

41.5 KB Created: 2020-08-23 02:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45010a51d70e723e3431c08ee0155584 SHA-1: 5fcf825f5dc7d76cca474d16c25e4bc89a7a1c83 SHA-256: af63c362375b00744ea8d4faeb6068d54b0156b0277f428d9f1121e90b9a1433
120 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is disguised with a lure for 'best action games for windows 10'. The document body, though heavily obfuscated, contains this same lure and the malicious URL. The presence of multiple shopify.com links and other unknown domains suggests a link farm designed to distribute malicious content.

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=best+action+games+for+windows+10
    • http://denoruloj.lastdaymedia.com/uploads/1/3/1/0/131070382/1025370.pdf
    • http://lezizo.maranathabiblens.com/uploads/1/3/0/7/130776132/4893919.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/banished_colonial_charter_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/monosacaridos_en_los_alimentos.pdf
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/chamorro_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/puxotenixoso.pdf
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/jamamidivuwuminotaxupo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3188/8021/files/windows_10_update_exe.pdf
    • https://cdn.shopify.com/s/files/1/0431/9405/6861/files/33893114799.pdf
    • https://cdn.shopify.com/s/files/1/0431/1908/3677/files/camellia_sinensis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7918/8118/files/calendar_2017_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/equinox_columbus_circle_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/wiwofefomejux.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_off000065ee.bin
0a80e9b0ea90b4cd10e2960e99a51992705362869595c361aadcd99bfe1f2c20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65EE 5644 bytes
font_01_sfnt_off00007918.bin
46a34452574fd796ab97d00709a1cd85e62231131977280e4206cbf8fcd1b629		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7918 9500 bytes

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