Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ae8f0a7bf8a999…

MALICIOUS

PDF

35.4 KB Created: 2020-08-13 08:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa93fecdc168c06311323899b765aeaa SHA-1: 0ed719591b92599b970debcc2217df0cc3762544 SHA-256: 22ae8f0a7bf8a9991556755c0394f94c1efe40e4522771029ebdbe9b6194c34f
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the same URL and keywords related to a 'liftmaster security plus 2.0 myq manual', suggesting a lure. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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/wb?keyword=liftmaster%20security%20plus%202.0%20myq%20manual
    • http://files.arijadehairandmakeup.com/uploads/1/3/1/4/131483108/nesowopemiso.pdf
    • http://files.kienmassage.com/uploads/1/3/1/4/131452977/be9a7bf76e.pdf
    • http://files.hotfootstompers.org/uploads/1/3/1/3/131397946/jexize.pdf
    • http://files.littlevibes.com.au/uploads/1/3/1/8/131856310/ferujig.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/18248176511.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/paxulavebokitam.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/zokuruzajenarazanegifib.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0728/files/87562208171.pdf
    • https://cdn.shopify.com/s/files/1/0447/8402/5751/files/boris_johnson_brexit_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/8437/3406/files/20876387399.pdf
    • https://cdn.shopify.com/s/files/1/0440/7666/2949/files/bams_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/mixesutenutulone.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/viruxisim.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_off00004c11.bin
c247233ceddf1ff6c80345456e683d26620da35b57ab10733f6c03963ef39fb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C11 5636 bytes
font_01_sfnt_off00005f31.bin
bc3c837d30059de7e981d8d88e4ded36be5ed742173b416aea68bfac95c86a5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F31 9808 bytes

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