Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ae36c10bb8ba05…

MALICIOUS

PDF

32.8 KB Created: 2020-08-01 16:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af085af633509f9200d4aa461718a7e5 SHA-1: 40fb3364548faeffde03707167ea0be97600203e SHA-256: b6ae36c10bb8ba05f16495ba9495b11feb86f594d960a65ec0400c1ed0be89d3
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ttraff.com/pify?keyword=playboy+magazines+free+pdf' is presented as a lure for free Playboy magazines. The PDF also contains a link farm pointing to numerous other PDFs, suggesting a broader campaign. The ML classifier strongly flagged this PDF as malicious.

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=playboy+magazines+free+pdf
    • http://files.moorereplacements.net/uploads/1/3/1/4/131453485/792931.pdf
    • http://files.seasholes.com/uploads/1/3/1/4/131438641/bokij_rupoboxavoba_sobamiwinopa_sanegovovipuz.pdf
    • http://files.nicoleedwardslimited.com/uploads/1/3/1/4/131437161/pebutubukor_makapaw_tumavuzopu.pdf
    • http://files.amyscheg.com/uploads/1/3/0/8/130874010/gubodejize.pdf
    • http://files.annbracken.com/uploads/1/3/1/6/131606668/mawedobibifowu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/50131719139.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/dugezoronipokizavejuziw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/wepalezudikaropujemuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/banefidofekadozimodomi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/dawominubiled.pdf
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/zivijoregig.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/dovesetavamubuti.pdf
    • https://cdn.shopify.com/s/files/1/0440/3003/4085/files/giteraba.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/lezikafukanodirora.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/43548277194.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_off00004547.bin
4ea8f3e9abb41a7788998c3fe317d42a519b4d8f17137c7287ae91148f331859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4547 5656 bytes
font_01_sfnt_off00005880.bin
cf67eacbd6f10ecb92a788f3967cd1642aa4c19ce9988a45f5abe77db29b30ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5880 8828 bytes

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