Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5bf3e2f265a34b9…

MALICIOUS

PDF

42.3 KB Created: 2020-08-01 17:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2dbeb0ce181714191717200de8cbb9e SHA-1: 253e00c53fa6df1ac944e185428acf175fd48673 SHA-256: d5bf3e2f265a34b94ffe03635e5ef7628a6ecc7f7cdb6249d41f9899360bf489
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The primary purpose appears to be hosting a link farm, potentially for SEO manipulation or to distribute further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=php+simplexml+to+array
    • http://files.facepaintingparadise.com/uploads/1/3/1/6/131606094/8477344.pdf
    • http://files.brothersphotographers.com/uploads/1/3/0/7/130739892/ec67a2bb4035a30.pdf
    • http://files.brianriordanmusic.com/uploads/1/3/1/3/131398424/ripafu.pdf
    • http://files.brothersphotographers.com/uploads/1/3/2/7/132740485/waxawi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/13326031008.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/6005/files/nedilowob.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/33121203966.pdf
    • https://cdn.shopify.com/s/files/1/0434/7710/6838/files/86559158842.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/danotafapokizuxogufomebe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/27839294834.pdf
    • https://cdn.shopify.com/s/files/1/0436/4907/3312/files/relodozijegoxenugowesis.pdf
    • https://cdn.shopify.com/s/files/1/0433/5632/3995/files/14074535198.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/vunovefoferofufeso.pdf
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/21865441778.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/73121007565.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_off000057db.bin
17a1469e15f74a9388dfefe2ebc334cc582d3af61c48c70e5d512eeadc3e6a62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57DB 5228 bytes
font_01_sfnt_off00006982.bin
d0aed907c14ade211a285367fad1b0f7d99ac620073b6ffc6f44a1fc41de3354		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6982 15824 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.