Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cd7bd8f927ae69a…

MALICIOUS

PDF

45.0 KB Created: 2020-09-11 04:37:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b93742288e7120a8855cec9ba8b8d3e0 SHA-1: 1b6c995fac0bb67b72ab6071e39343f15167172d SHA-256: 2cd7bd8f927ae69a598a76f097195335a7effcf51b31f5fa74e56905c4e4e0df
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.link/wix?keyword=group+excel+sheets+mac'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links. The ML classifier strongly supports the malicious nature of this PDF. The document body, though heavily obfuscated, contains the same lure text and URLs, reinforcing the malicious intent.

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.link/wix?keyword=group+excel+sheets+mac
    • http://xogabef.palaeosa.org/uploads/1/3/1/4/131407406/pogupavezup.pdf
    • http://pubid.highlevelhealing.com/uploads/1/3/1/3/131398560/784964.pdf
    • http://gafusib.iglesiapiedradesantuario.com/uploads/1/3/1/4/131407668/4b0c381d2109.pdf
    • http://files.bitsofbytes.co/uploads/1/3/0/9/130969576/gadatesu_sonuzaterusug.pdf
    • https://static.usrfiles.com/ugd/ce5d00_7e911c098a4b4cb58b3824a7ca4b87cd.pdf
    • https://static.usrfiles.com/ugd/ea78e0_11e0edc60edd43ffbb253a54816c21fd.pdf
    • https://static.usrfiles.com/ugd/2f3216_7e1b279eed0141cea340d42026165aea.pdf
    • https://static.usrfiles.com/ugd/6f7357_b7b9cbffc2f74c38bda2b3ffae45bd3b.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_a0f53ab1a1e343ea8323c570e0ab3fe5.pdf
    • https://cdn.shopify.com/s/files/1/0431/6699/0502/files/devokigofotas.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/virufikasofetoxefewi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/karudamejojaso.pdf
    • https://static.usrfiles.com/ugd/05e3ad_d7ba44cd164246ed84b0754922ef244d.pdf
    • https://static.usrfiles.com/ugd/23924c_1f2960232fbf41bebc7888901391430c.pdf
    • https://static.usrfiles.com/ugd/299074_c534a8e72207424d8e3959b988dadc3a.pdf
    • https://static.usrfiles.com/ugd/81b904_565a0dbdefd248428eddc68b5af30ca4.pdf
    • https://static.usrfiles.com/ugd/a374b9_c82ac2f887794b8db146dab01487ce21.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_off00005b70.bin
f9356716cf315642a4bd4b32d45833803031671ad3b5f7683891e899151bbbf4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B70 5272 bytes
font_01_sfnt_off00006d39.bin
8852bd95055e618cc67df71fae77e9ee6c97850c76f27ae169b5953aaa0e98d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 10384 bytes
font_02_sfnt_off000090b3.bin
9ef2a6349b357ef261f6e972b77c0b7f36b003af74f6d21dd25b8d2745b9e33f
pdf-font-stream PDF embedded font (sfnt) at offset 0x90B3 16460 bytes