Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abeb2eda4c648b4…

MALICIOUS

PDF

47.8 KB Created: 2020-07-26 22:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6782ca40d4df30a816ee1bafd80893f9 SHA-1: fdbae3eb56c8c630d8a26061292828ce674c3212 SHA-256: 3abeb2eda4c648b4ad073e854a34216964f3a9f50f129c73734e88fad418a1e7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.com/pify?keyword=ariella+azoulay+civil+imagination+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDF documents from web content, further supporting the link farm attack pattern.

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=ariella+azoulay+civil+imagination+pdf
    • http://files.upperarlingtonmusicacademy.com/uploads/1/3/1/0/131069819/7bf4289.pdf
    • http://files.fernandojimenezphoto.com/uploads/1/3/1/6/131637108/lepemusisariraw.pdf
    • http://files.msgallardoela.com/uploads/1/3/2/7/132710753/lewiwig_sawiselab_pozili.pdf
    • http://files.jessicadesautels.com/uploads/1/3/0/9/130969960/1651075.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/24297859353.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/wezeda.pdf
    • https://cdn.shopify.com/s/files/1/0431/6050/2421/files/kibenirapudexo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/62092050189.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5755/files/jewoxisekiseluparezu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0655/6320/files/lefarabirax.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/jireja.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/19568228642.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8571/files/19853457264.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/zupefonowodebovosura.pdf
    • https://cdn.shopify.com/s/files/1/0435/9304/0029/files/refogizijoz.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/
    • https://cdn.shopify.com/s/files/1/0429/2067/3

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007de8.bin
556a8b3900d8502b64780bb281cc55c1583d639581b4b8e1d63ee01c79329c42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE8 5380 bytes
font_01_sfnt_off00009030.bin
e834777d30124d6831ab23cc5cae310c9b02f3d154449b53e73a5dc843776bef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9030 9796 bytes

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