Malicious PDF — malware analysis report

Static analysis result for SHA-256 2975307355dfccd4…

MALICIOUS

PDF

43.2 KB Created: 2020-08-04 01:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b65f85a1d2489d0162f31e4ecf47803 SHA-1: f82f02c2ce09690854e289a4d5f139e4ecfb38cd SHA-256: 2975307355dfccd4726ab95d8ceeb1c15bbae8b44148943b0e3eea1ba1880763
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=grade+9+english+module+anglo+american+literature+answer+key+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure for educational content. The presence of a link farm further supports the malicious intent of directing users to potentially harmful 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.com/pify?keyword=grade+9+english+module+anglo+american+literature+answer+key+pdf
    • http://files.hungryhawaiian.net/uploads/1/3/2/6/132682848/6939f8188d5.pdf
    • http://gawemuj.apco-florida.org/uploads/1/3/1/0/131071252/romupokejiwisu-jalilude-jikegek.pdf
    • http://files.sustainable-movement.com/uploads/1/3/2/7/132740464/zunole-xukopa-kopom-jukowowejig.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/vamore.pdf
    • https://cdn.shopify.com/s/files/1/0439/4316/6107/files/24686289752.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/lomafefepiteridi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9811/9075/files/12667182821.pdf
    • https://cdn.shopify.com/s/files/1/0433/8948/5221/files/burger_bistro_centurion_menu_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0428/2905/4118/files/zozajuram.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/36496802683.pdf
    • https://cdn.shopify.com/s/files/1/0440/7230/4790/files/77232706422.pdf
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/43802102496.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/ranamisaravuroberavom.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/99076795661.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_off00006730.bin
6db088fcb158d3f7474db3adf861ecb0583a2700b76f565daad8820d074c8ae7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 6012 bytes
font_01_sfnt_off00007b99.bin
7628e7dcfa99c5bed0889c02e3ef6d5a8722f678eed45c051a8cf909e6b46239		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B99 10588 bytes

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