Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d49892ce6c240ec…

MALICIOUS

PDF

53.9 KB Created: 2020-08-30 20:06:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae9e34e8358979fc38156c01846a18f4 SHA-1: 4862ca28df9afcd0efac32d6bd09629858b65884 SHA-256: 9d49892ce6c240ece0a935c6d05d7f324790322093d12f852fadc3d3996ba169
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL 'https://ttraff.cc/wix?keyword=aircrack-+ng+free++for+ios' is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The ML classifier strongly supports the malicious classification.

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/wix?keyword=aircrack-+ng+free++for+ios
    • https://static.usrfiles.com/ugd/b8c837_73b809136303488790b7cc1d6092539c.pdf
    • https://static.usrfiles.com/ugd/4f270c_3a3ded072538416da23ac483750b58c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_34572aa648de458f823d9caeefdf3df6.pdf
    • https://static.usrfiles.com/ugd/b8c837_396629ec99d94ffd808ba9b983161948.pdf
    • https://static.usrfiles.com/ugd/b8c837_d424ac2844b1474390a801dd8b290f2a.pdf
    • https://static.usrfiles.com/ugd/4b68be_61e30dd537ea476396883efe22bc7e0d.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddbbd5f0e68a4e4d8a973a8d228d58dd.pdf
    • https://static.usrfiles.com/ugd/ce5d00_bded5247ba354b95a420699e4828ee71.pdf
    • https://static.usrfiles.com/ugd/9d869b_8e59b6f7d009412d9f58e7770badda3d.pdf
    • https://static.usrfiles.com/ugd/271e65_ffc325263da24a17a545ecebc5cc7fd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4e3ef6c714e46d79401bf9f7593084a.pdf
    • https://cdn.shopify.com/s/files/1/0430/1688/0281/files/sojoxetotomajunakamasi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/truman_capote_in_cold_blood.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/
    • https://static.usrfiles.com/ugd/4b68b

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008894.bin
12c34fe4a3ce2fd638b3f5d604f3bf5bc33977d3422a633e6234d631d27fe879		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8894 4808 bytes
font_01_sfnt_off000098f5.bin
6f4653d546e0f49639c5695d8cfb056acc1b951eb2a3baf8e292498496d9f16d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98F5 10412 bytes
font_02_sfnt_off0000bc9a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC9A 4324 bytes

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