Malicious PDF — malware analysis report

Static analysis result for SHA-256 27064efc8f26cae1…

MALICIOUS

PDF

50.8 KB Created: 2020-09-01 11:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c1a4c027d3a1e08177404f97e32df2e SHA-1: 6d416053fb7718b13dc0ce516506321eca93accd SHA-256: 27064efc8f26cae15f840586e3419cbedeb97e74f0759509906f68b0cfad4b2e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.me, which is disguised as a lab report. This indicates a phishing or social engineering attempt to redirect the user to malicious infrastructure. The PDF also contains a large number of links to Shopify and static.usrfiles.com, likely part of a link farm to improve SEO for the malicious redirector. No scripts were extracted, but the presence of malicious links is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=mechanical+energy+conservation+lab+report
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/59967130116.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/appraisal_templates_uk.pdf
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/fozusinopokusexofaligugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/ruvaxozisasazodub.pdf
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/16256488710.pdf
    • https://static.usrfiles.com/ugd/0a052f_85a75553ec5946239fdcc0891811c2d2.pdf
    • https://static.usrfiles.com/ugd/33ab24_e2f0c72b4e9149fb84fffdbe9f7c7278.pdf
    • https://static.usrfiles.com/ugd/f09a9d_02266d234c904d75ae1b1650051851ec.pdf
    • https://static.usrfiles.com/ugd/e8506d_faf1ecd89dcc4c2891e0947ed5cc6f84.pdf
    • https://static.usrfiles.com/ugd/de65f7_c98d9bc0b349447680a64cbbed3b1935.pdf
    • https://static.usrfiles.com/ugd/0d002d_c897bfaae5ce4d4bb61e848d6242f95a.pdf
    • https://static.usrfiles.com/ugd/3b7182_34ccea0124e4494d90e05267ae510d60.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbc3e5146f5d47b9bd1c8682daaed1fc.pdf
    • https://static.usrfiles.com/ugd/fd30ac_9e9b74f30f1a46be8e76cbac88f90f03.pdf
    • https://static.usrfiles.com/ugd/735189_7034b3aa380d4b14bc0fafa06a10de04.pdf
    • https://static.usrfiles.com/ugd/760101_dd6db3d03a83489c944945fba6a81b07.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_off00007adb.bin
a8735645ef727cae28d91777623f1e9f5321e28b19a95d9bc01301996b627f85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADB 5288 bytes
font_01_sfnt_off00008cd6.bin
8701fcdf6d110bd063b564fac692d9aafb4836149b1c349bc5a9c8b6640719f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD6 10248 bytes
font_02_sfnt_off0000afe7.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFE7 4324 bytes

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