Malicious PDF — malware analysis report

Static analysis result for SHA-256 a06c35b9d57333bb…

MALICIOUS

PDF

64.2 KB Created: 2020-09-13 00:26:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01353b5e92420d3173e81e60a02ad306 SHA-1: 507a4cec8c2b8fe30c4dfdc142ba6ad060189487 SHA-256: a06c35b9d57333bbb7ccf11f9aad997385fdb301d03953227711fb69f187f368
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. Another critical heuristic identified a PDF link farm, suggesting a spam or SEO-based distribution method. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains text related to 'character operations manual' and the malicious URL, reinforcing the lure.

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/wb?keyword=character%20operations%20manual%20release%20date
    • http://lemupumu.lisamargaroli.com/uploads/1/3/2/6/132681459/3849372.pdf
    • http://files.lorainedavies.com/uploads/1/3/0/7/130740242/bofoxeruxurab_xutadedetewiga_latibuzu_lanig.pdf
    • http://xopuwusos.lizziebee.org/uploads/1/3/0/7/130738614/7500386.pdf
    • http://files.4heartcounselor.org/uploads/1/3/0/7/130739598/3552502.pdf
    • http://files.banjodanielmusic.com/uploads/1/3/1/8/131856072/demal-gewibibal-binafuti.pdf
    • https://static.usrfiles.com/ugd/a01749_095e5415df1d475da46cd5caf51a46ac.pdf
    • https://static.usrfiles.com/ugd/7ff653_140bc84d97ad49e287ceaa3298ff8991.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2d3ad00f82e41b29ca32be804017d62.pdf
    • https://static.usrfiles.com/ugd/ff2e72_dbc18c57836a4a4ea72b741c92b53f12.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/vedowatakixegeroga.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/56590177857.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/61899474555.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/nojas.pdf
    • https://cdn.shopify.com/s/files/1/0429/3001/2316/files/48353023979.pdf
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/xawojixagufokibojokezu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/zisafo.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_off0000bf03.bin
2d749c9aa74a9764d7245e801d4cad65d329e99c866d4a8c0ca5385a1258f38d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF03 5220 bytes
font_01_sfnt_off0000d08b.bin
3300d844c6568a4481e4bf9fceed9dd4246f37bf0281f673adbb4bbed519baca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD08B 10240 bytes

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