Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ca8c32e2d030f4…

MALICIOUS

PDF

44.7 KB Created: 2020-08-06 10:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8310a45284d93f78a68772dce47594b SHA-1: 2193cb0277c699e90f5bbe35a190d6f4c99ce6e6 SHA-256: f6ca8c32e2d030f451d51d3fd7146183acb23237baa154c7d9143bf859237b65
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The document body contains obfuscated text and the redirector URL.

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.ru/pify?keyword=d+d+3.+5+shackled+city+pdf
    • http://files.louthbeekeeping.com/uploads/1/3/0/7/130739625/49f83.pdf
    • http://files.fbmarion.org/uploads/1/3/1/0/131070231/1381930.pdf
    • http://files.rachelwilliams-animalbehaviour.com/uploads/1/3/1/0/131069887/16316bad4.pdf
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/ffxiv_log_file.pdf
    • https://cdn.shopify.com/s/files/1/0437/0389/4171/files/zexugilorepafol.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4328/files/fakogaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/12408113685.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/john_deere_550_dozer_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6974/files/mejelewubakurajadutagax.pdf
    • https://cdn.shopify.com/s/files/1/0433/5766/7487/files/ninja_cpa_review.pdf
    • https://cdn.shopify.com/s/files/1/0435/4814/7867/files/gebupugapalu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/7031546762.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/37915376416.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_off00007096.bin
8dfdfd97c7b345d86d5da4adb21ce896754f0a77a38df023cc7b8725c1605f5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7096 5632 bytes
font_01_sfnt_off000083dd.bin
9a9b57d0bd4a108be91a4e500d5668324cd511d7379625c71bf2564bde815fcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83DD 10020 bytes

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