Malicious PDF — malware analysis report

Static analysis result for SHA-256 b233ea7168c6b8cb…

MALICIOUS

PDF

37.0 KB Created: 2020-08-30 03:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d56f2aaee03d6d5ec8955f536cc06aa SHA-1: 4b2016dad67f0481e2aa7e7557a1a43c28577008 SHA-256: b233ea7168c6b8cb8dab141f8b5e652308697c166a37887a52a74ada2b082062
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.com/wix?keyword=chip+dergisi+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this malicious site. No scripts were extracted, and the document body does not provide further context on the payload.

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/wix?keyword=chip+dergisi+pdf
    • https://cdn.shopify.com/s/files/1/0440/3760/3478/files/poxabagizipibobavevukiwa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7720/files/totuxixidono.pdf
    • https://cdn.shopify.com/s/files/1/0436/4691/0617/files/pulujiwikawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/gasonamudi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5906/files/types_of_ornamental_plants.pdf
    • https://static.usrfiles.com/ugd/95089d_a7625a2231404b3eb11bbf0f53a5966e.pdf
    • https://static.usrfiles.com/ugd/cd79e3_a39573735c1b406b80b1d6c1c3684220.pdf
    • https://static.usrfiles.com/ugd/dd4472_39293b42ed98443aaa10a21d10284bc9.pdf
    • https://static.usrfiles.com/ugd/6116da_eee443aa47c2444fab3479c965683dcf.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6eba044e763446e97e044e59ea99c06.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d9ff9cda2bc4181aee707072540467a.pdf
    • https://static.usrfiles.com/ugd/b8c837_df61845d59054d0abe04d449837c5a15.pdf
    • https://static.usrfiles.com/ugd/51c472_ded1092ef98f49bc8c977f9711e9d92f.pdf
    • https://cdn.shopify.com/s/files/1/0433/2254/0185/files/nios_assignment_first_page.pdf
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/dugunezixijixila.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_off00004818.bin
3afb5b1cff463223a72a283896c24a67f7120d6c47769b2f25fc9847e8bf8000
pdf-font-stream PDF embedded font (sfnt) at offset 0x4818 4576 bytes
font_01_sfnt_off000057b4.bin
746a753515685daa29d88151d96869b2bb484857cd8d8358a2084f19a1ab603f
pdf-font-stream PDF embedded font (sfnt) at offset 0x57B4 9832 bytes
font_02_sfnt_off0000791b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x791B 4324 bytes