Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e980dbc77a0f6a5…

MALICIOUS

PDF

47.4 KB Created: 2020-09-02 02:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce814fcea82b7dc5fe6f9fa61e091439 SHA-1: 035b9228cc2708c0613e9bc3a4f96b904885b782 SHA-256: 5e980dbc77a0f6a567c821e849af8120029fd04fba838c6a1ff0780e9a0a9f4b
154 Risk Score

Malware Insights

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

The PDF contains embedded links and text that mimic a 'Youtrack time tracking report' to deceive the user into clicking a malicious URL. The ML classifier strongly indicates maliciousness, and the PDF is flagged for linking to known malicious redirector infrastructure.

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.com/wix?keyword=youtrack+time+tracking+report
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b81754_d8b1701b592e435685f04c154dc1d09c.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb87d76275f6410396f818cfa8ea8907.pdf
    • https://static.usrfiles.com/ugd/c63dba_578f849470b24182ae9df641d14e544c.pdf
    • https://static.usrfiles.com/ugd/bb13a2_7b8d7d31b5274f4e98a61f1426271b3f.pdf
    • https://static.usrfiles.com/ugd/b8c837_35abd24c862d4319b7e29aed266c0f7d.pdf
    • https://static.usrfiles.com/ugd/a59130_4fa1a7fe58b2458490c9a452f039c55b.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/gamibubivezujagusobeni.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/mazojeserevototigavaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6464/files/26740407703.pdf
    • https://cdn.shopify.com/s/files/1/0434/2448/1431/files/nusuninajudir.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_off00007ba3.bin
51a6e2eb31c2acb58e147a5640c42ae1e2e1d4d75b44a9c19d2694d7f2a8af82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA3 5068 bytes
font_01_sfnt_off00008cce.bin
ec1aaecc27ee85eb1ef6363aecc9cd854f9d06e7d83074647c05a82340aed11c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCE 10580 bytes

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