Malicious PDF — malware analysis report

Static analysis result for SHA-256 81d860d4e0b2316e…

MALICIOUS

PDF

43.4 KB Created: 2020-08-12 06:26:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff07ca9c7d3ff1c587ff123370fe5428 SHA-1: ffc78246362dde104609a339bb9f04b0f278960c SHA-256: 81d860d4e0b2316ed97a5219e2880ccb39594bfd9e70084f5cc85e9aa0d782ba
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to redirect users to malicious websites. One prominent link, disguised as 'Google plus brand guidelines pdf', leads to 'https://ttraff.ru/pify?keyword=google+plus+brand+guidelines+pdf', which is flagged as a malicious redirector. The file also exhibits characteristics of a link farm, with many external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a large number of pages. No scripts were extracted from this sample.

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.ru/pify?keyword=google+plus+brand+guidelines+pdf
    • http://files.technologysales.net/uploads/1/3/2/3/132303229/wafofox.pdf
    • http://rujev.glasloughtidytowns.com/uploads/1/3/2/7/132710712/moluredogipave_xidubojafibo_xepora_zabonarudut.pdf
    • http://files.mriteacherresources.org/uploads/1/3/2/3/132302894/gurepegabikanozeli.pdf
    • http://files.technologysales
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/wutakasu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/fibirir.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/signs_and_symptoms_of_physical_abuse.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/90372735278.pdf
    • https://cdn.shopify.com/s/files/1/0431/5240/8742/files/givupovekilivesuvoxom.pdf
    • https://cdn.shopify.com/s/files/1/0435/6843/1265/files/inflorescencia_del_sorgo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5029/4678/files/balugojogutibi.pdf
    • https://cdn.shopify.com/s/files/1/0447/2481/3977/files/fallout_4_console_commands_items.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/new_york_addresses.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/75582343093.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/cbse_class_10_syllabus_2020_19.pdf
    • https://cdn.shopify.com/s/files/1/0446/1376/3235/files/anti_inflammatory_herbs.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_off00006cac.bin
5680f8140259ea1f47a1b3e6e6f607b75b39c4ff02fc8bba72ceb086d11867f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAC 5380 bytes
font_01_sfnt_off00007f07.bin
072357dfbd4118f5e02514c742043450e8ad0363eafe6ce850528c38e15b01cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F07 9748 bytes