Malicious PDF — malware analysis report

Static analysis result for SHA-256 314edd16d74940dc…

MALICIOUS

PDF

47.0 KB Created: 2020-08-13 22:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b11acdf378715a9d20ba64c6cf21f0a SHA-1: ffb031d5dc3c95317fa48ffdda38e9e7ca731fc5 SHA-256: 314edd16d74940dc575401ffa5307f9753faf2b9a94137154719b11991221646
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with heuristics indicating a link farm and a malicious redirector. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=affluence+without+abundance+pdf', which is likely used to obscure the final destination of the attack. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to Shopify and other domains, suggesting a broad distribution attempt. 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=affluence+without+abundance+pdf
    • http://files.contessablack.com/uploads/1/3/0/7/130739570/3037b8b16b53.pdf
    • http://jugepuvo.allpurposerental.net/uploads/1/3/0/8/130874218/e41a9.pdf
    • http://files.kayalaterman.com/uploads/1/3/2/6/132681409/6752323.pdf
    • http://files.countyparkfriends.org/uploads/1/3/0/8/130814279/zobisulit_selitiga_sojinotavom.pdf
    • https://cdn.shopify.com/s/files/1/0434/8113/7316/files/hallelujah_square_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0441/1283/8808/files/68584528571.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/learning_styles_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0429/4085/8527/files/zogelarojudisuruvaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/bayesian_inference_for_stochastic_processes.pdf
    • https://cdn.shopify.com/s/files/1/0446/6769/9353/files/neurological_examination_made_easy_5e.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/fundamentals_of_computer_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/0223/1971/files/palamenikoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/54900654012.pdf
    • https://cdn.shopify.com/s/files/1/0438/1566/5826/files/2002_mercedes_benz_c240_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/vupekojorir.pdf
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/nazij.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/unofficial_shivering_isles_patch.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/warodofodovab.pdf
    • https://cdn.shopify.com/s/files/1/0445/4078/8895/files/nabegusiton.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_off000078b0.bin
f233bb2b47e780fc57ff0d9605ac8f9d37172771268bb34f0235c84f27585b9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x78B0 5188 bytes
font_01_sfnt_off00008a61.bin
ca14b7bdcef2e8b80da2e7e649607a7c4acc018cb71465a0c44bc15a0fcf12ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A61 10728 bytes