Malicious PDF — malware analysis report

Static analysis result for SHA-256 a102efbf4d811c33…

MALICIOUS

PDF

60.3 KB Created: 2020-08-31 00:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c00351b196e388b6ffe050c58e37fc86 SHA-1: e816243fe7f8f110ddb2d02fd712b8d42c64f2be SHA-256: a102efbf4d811c33482ce416b7ec0d4c31ade30b5b29e9025265ae666b626528
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=new+technologies+artificial+intelligence+and+shipping+law+in+the+21st+century'. Additionally, another critical heuristic indicates a PDF link farm, suggesting a broader campaign to distribute malicious content. The ML classifier strongly flags this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient to classify the attack pattern.

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/wix?keyword=new+technologies+artificial+intelligence+and+shipping+law+in+the+21st+century
    • https://static.usrfiles.com/ugd/b8c837_bab8d139f16d40d2aa89387052243d87.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab510ceca5b543cf8b782a77f8b8efb8.pdf
    • https://static.usrfiles.com/ugd/f3cb45_6cc96d327f154cf9ae94d56bfeaeee14.pdf
    • https://static.usrfiles.com/ugd/b8c837_695ba211d7f043d898ec67f7cbd7a68f.pdf
    • https://static.usrfiles.com/ugd/409ca8_b1c12b985f2d4d3bb8c967cd3ab44d8a.pdf
    • https://cdn.shopify.com/s/files/1/0448/7793/8855/files/bent_rule_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/cesur_yeni_dnya_indir.pdf
    • https://cdn.shopify.com/s/files/1/0434/8814/9668/files/the_universal_traveler.pdf
    • https://cdn.shopify.com/s/files/1/0437/4229/8264/files/ragikukufedizoxitak.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/85170438925.pdf
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/ludekaziwedilulejikusibez.pdf
    • https://cdn.shopify.com/s/files/1/0433/2116/3941/files/sorting_algorithms_java.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009e56.bin
258159b0862dc015714981eeb69be466c61e378a27aa982db3b254a8eab941b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E56 5644 bytes
font_01_sfnt_off0000b1a5.bin
3e75e3daa49c0c8721a1cf2e011d6ccac603670e030bb474ffea7c1fed4120be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1A5 10440 bytes
font_02_sfnt_off0000d51a.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD51A 4324 bytes

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