Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe53c27e8bfed6d6…

MALICIOUS

PDF

47.2 KB Created: 2020-08-24 20:32:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 976339e73936706e1bc2186df842bb1f SHA-1: 168f733fa3bb1412e3c08f8a9d362d6da1178ace SHA-256: fe53c27e8bfed6d60a1f780c54a660a912522a550c00db14d18c9ccc0bfc0c83
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.com/pify?keyword=loading+bay+design+guide'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for 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.com/pify?keyword=loading+bay+design+guide
    • http://files.cleanrecordillinois.com/uploads/1/3/1/3/131383467/3038736.pdf
    • http://files.haciendasonoma.com/uploads/1/3/2/7/132740218/7130198.pdf
    • http://negagu.genpromotion.nl/uploads/1/3/0/7/130740117/600100221f.pdf
    • http://rovujo.mysje.org/uploads/1/3/2/7/132740267/biguwokep.pdf
    • http://lijewi.nightowl-omnias.com/uploads/1/3/1/1/131163667/6fb1c1d156736.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/46060411184.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/6724851032.pdf
    • https://cdn.shopify.com/s/files/1/0465/2938/0510/files/54744539975.pdf
    • https://cdn.shopify.com/s/files/1/0460/1407/0945/files/kiwatabasedut.pdf
    • https://cdn.shopify.com/s/files/1/0429/2434/3462/files/android_imageview_set_bitmap_programmatically.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/54813838960.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/jafolifupufif.pdf
    • https://cdn.shopify.com/s/files/1/0436/9242/5384/files/29741237474.pdf
    • https://cdn.shopify.com/s/files/1/0447/2619/0234/files/xivofagunuvitap.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_off00007c73.bin
ef3534c219f76528cedb81d458915715d382440645e371f762fdc9bb5cf01b3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C73 5048 bytes
font_01_sfnt_off00008db6.bin
b5fc7f7b6b52e7f0f9a3bc4e6577f64899924bac174e4f87133c4860a5494cc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB6 9968 bytes

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