Malicious PDF — malware analysis report

Static analysis result for SHA-256 8acd983f30e5fdc0…

MALICIOUS

PDF

42.8 KB Created: 2020-08-16 12:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baed4664ecbf1213ab5bcab981c7958c SHA-1: a932ef093923f0d378b86b0e532bf2efd0cdc50a SHA-256: 8acd983f30e5fdc0d2ca898dd4daa7dfd06bee2b0db23eea1c87b344c897c113
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=batgirl+emblem+template', which is also flagged as malicious. The presence of a large link farm suggests an attempt to distribute malicious content or lure users to phishing sites. No scripts were extracted from this sample.

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.com/pify?keyword=batgirl+emblem+template
    • http://files.uccstj.com/uploads/1/3/1/4/131437402/jefal.pdf
    • http://jigasa.trefoilintegrity.org/uploads/1/3/1/8/131856907/5ec4c6b5.pdf
    • http://files.evolutionarytransformationsgroup.com/uploads/1/3/1/0/131070109/jotizib_gekudadujexa.pdf
    • http://files.episcopalchurchredding.org/uploads/1/3/0/7/130776521/5247769.pdf
    • https://cdn.shopify.com/s/files/1/0440/9776/5528/files/47369746450.pdf
    • https://cdn.shopify.com/s/files/1/0435/2281/8200/files/senuxuzesaz.pdf
    • https://cdn.shopify.com/s/files/1/0445/6821/5716/files/halo_graphic_novel_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/mipoxorexedoxixo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/5328993492.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/33994340349.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/42377214612.pdf
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/84613252923.pdf
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/css_grid_template_responsive.pdf
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/society_bylaws_in_marathi.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_off00005d51.bin
70c4a8dc28a3d9cc668f28218ad25bee626e975aeba19ee4782748a05ca556fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D51 5148 bytes
font_01_sfnt_off00006eb3.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB3 1800 bytes
font_02_sfnt_off00007741.bin
d16a0d0f359aad211f2f4e9d0103e24b827871374be0e042b025e1bc0bea1df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7741 12056 bytes

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