Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad4a4701c7b25915…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 22:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acc910793ec1f9e79418b99a62b31345 SHA-1: 0881d7861c1b66bb1f13a26fddc61fcb67b7076c SHA-256: ad4a4701c7b25915816446839638f46649f3da9352b075f820cc0984ced1324e
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=free+logos+bible+software++for+pc', which is flagged as malicious. This suggests the document is designed to trick users into clicking the link under the guise of downloading free software, leading them to malicious infrastructure.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=free+logos+bible+software++for+pc
    • http://noxiri.theglaws.com/uploads/1/3/2/6/132695818/vuragep.pdf
    • http://files.flatspokecycles.com/uploads/1/3/1/4/131408529/6549756.pdf
    • http://files.ancestorscouture.com/uploads/1/3/0/7/130775180/nuredozoti.pdf
    • http://wofifuted.education-projects.com/uploads/1/3/1/8/131856158/6217925.pdf
    • http://jugib.pershoretownplan.co.uk/uploads/1/3/0/7/130776485/74f750d85af.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/the_veil_rpg.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/c_custom_iterator.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/juvagaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wawufomujemozinabewa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/29839529544.pdf
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/87702923005.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/cyberbullying_on_social_media.pdf
    • https://cdn.shopify.com/s/files/1/0432/9914/3838/files/97646814602.pdf
    • https://cdn.shopify.com/s/files/1/0453/2423/9003/files/bahawalpur_map.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/xutuvubaxiwuwujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/69563185685.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/11631236273.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bb4.bin
06ccbfa385b6b77bd8bd81bd944ee00840ce1c0fffcf97014372af3de4c2b877
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB4 5052 bytes
font_01_sfnt_off00006d0f.bin
5d0f0186cfb61e5a33fbe4f1e3e06aa99e03cac1fe0d523d682272c47875ce33
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0F 10488 bytes
font_02_sfnt_off000090f3.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x90F3 4324 bytes