Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6391d201baeaa48…

MALICIOUS

PDF

50.2 KB Created: 2020-08-02 05:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40a14cf40659e90dedfcd0dd9bd38e1d SHA-1: da6036d56663f38c1b6a99ad263606b7f259b979 SHA-256: e6391d201baeaa482914def637ac7f110a46f05bc96a8744da5783cedbac5abd
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=age+difference+hentai+gifs'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a reference to 'wkhtmltopdf', suggesting it was generated programmatically. The primary intent appears to be directing users to malicious infrastructure.

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=age+difference+hentai+gifs
    • http://files.sankofaedgroup.org/uploads/1/3/2/6/132681391/lagevanixefiziruzufi.pdf
    • http://files.mizzellesstandardpoodles.com/uploads/1/3/1/1/131164067/228306.pdf
    • http://files.jvjewelers.com/uploads/1/3/1/3/131381640/3608555.pdf
    • http://files.pineycreekbastrop.com/uploads/1/3/2/6/132681928/2f222255a1abb56.pdf
    • https://cdn.shopify.com/s/files/1/0433/9354/8444/files/negimijidirubodal.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6828/files/buxepegaferugos.pdf
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/57529370819.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/ridonenixovunixafamarilo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6449/files/polexevazile.pdf
    • https://cdn.shopify.com/s/files/1/0431/5929/0022/files/fopomuvazokuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/lugemeburezosivutopatovu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdf
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/23209195726.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/dodegerugubefotigalir.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/xikukafumijomaxulosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/38157652407.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/tirel.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dc2.bin
76e34ba13ea898a16c1e3bb4ec626fa5dac2c75b6113d01907d05c48c3ea493d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC2 4048 bytes
font_01_sfnt_off00006c25.bin
9a0102186890c6d7df1a9e8650fff16190992f444c2b469b577b628fc7f34576		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C25 5240 bytes
font_02_sfnt_off00007dfb.bin
49d0b953c8ec8579e9255e61886c133e4e2a910e21e51052a5f8c172c1e7af42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFB 12304 bytes
font_03_sfnt_off0000a4ea.bin
b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4EA 16312 bytes

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