Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d9b02b9ba317f2…

MALICIOUS

PDF

43.2 KB Created: 2020-08-31 14:31:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8acc96fdbacb5ef5f8da66938b6b3e23 SHA-1: 26a78289bd3eef6c1743aeedab447e26e5833bd8 SHA-256: 14d9b02b9ba317f2f38f7895f1e36e5399b0ab829263dc4cd6f5343675bcd873
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, including one identified as a malicious redirector. The document body, though partially garbled, suggests a lure related to 'student ID card templates'. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site. The ML classifier strongly supports the malicious verdict.

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.cc/wix?keyword=vertical+student+id+card+template+word
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_a68c19e79ac14cc0a1bd0bc883cb7970.pdf
    • https://static.usrfiles.com/ugd/3fc21f_a8bccdd2009b4c7ba3aa0e9c88cffe4d.pdf
    • https://static.usrfiles.com/ugd/585b1d_763f243bb7c0465d990549ccae232aea.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_423af6bc1b0c4eeb9b9089ec9ac39a59.pdf
    • https://static.usrfiles.com/ugd/12dc78_756bdff8331242d0aaf531cc45fc8138.pdf
    • https://static.usrfiles.com/ugd/b8c837_fca20a2ffa5a433c9e4f573b849144fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_fab523f10d7e4bb492aa6d202f99fb48.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b0c942838774af2964df5ff3177f97c.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/70023499868.pdf
    • https://cdn.shopify.com/s/files/1/0435/7573/8527/files/larun.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d8d8e51abbd4a3788e7fde0195f5ae2.pdf
    • https://static.usrfiles.com/ugd/b8c837_0211ac8a26b74ddd899207dd28056655.pdf
    • https://static.usrfiles.com/ugd/6cfc61_6ac066513f8449399ac8af21276d8d06.pdf
    • https://static.usrfiles.com/ugd/c1108c_662beb15d28a4de59e4eaa0e4c1d6cc5.pdf
    • https://static.usrfiles.com/ugd/4d400c_60698330598f42f78addd9b6e9e77551.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006439.bin
94f46d9084cef050090cacb5bd8a27421da60836d153e30b1f820d549574ece0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6439 5276 bytes
font_01_sfnt_off00007624.bin
8397b4c6314d2f1620a35d733ab052a0c9835359063975792b330b6d6e8facf6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7624 13632 bytes