Malicious PDF — malware analysis report

Static analysis result for SHA-256 343ac4297a7de5e8…

MALICIOUS

PDF

39.3 KB Created: 2020-09-11 20:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43e1e6b30fed5b07123228efc1772aa3 SHA-1: dc11615a235fe523a8eda8a9bc40b102f9315cfc SHA-256: 343ac4297a7de5e81b1b8c4f3ca339f16325f95a6aabcf5466e6b11ac379a2a1
94 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.club/wix?keyword=opposite+to+emotion+action+worksheet+pdf', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to this URL and other suspicious PDF download links, suggesting a phishing or malware delivery attempt.

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.
  • 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.club/wix?keyword=opposite+to+emotion+action+worksheet+pdf
    • http://files.asliagirbas.com/uploads/1/3/0/7/130776841/07f27bfa0f9527.pdf
    • http://rutal.toddphillipsmusic.com/uploads/1/3/1/3/131379510/vofajafavupudi.pdf
    • http://files.rhiannonlisettehenry.com/uploads/1/3/1/4/131410747/gulapurunixab.pdf
    • http://files.growingwithbrock.ca/uploads/1/3/1/3/131381374/8586130.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/2813e2_765a7a78a93e48b58ab40ad5e02035ca.pdf
    • https://static.usrfiles.com/ugd/a4ea6c_38cbf4cc8fc34b43bbed96327b464516.pdf
    • https://static.usrfiles.com/ugd/35e1ce_c29cd8ba6d7f46598a53f54e678fc145.pdf
    • https://static.usrfiles.com/ugd/857e61_5cccb0c2caca4859865db79aff41fcca.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_a48cbfcd0b57490d9371be5c382ffe07.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_off00005b59.bin
a6dd437199a14256def7445ef33316b81ec4615c1b9de7bd940d671689188690		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B59 5544 bytes
font_01_sfnt_off00006e12.bin
dc4640940b542277a2675e244297105b8b25343327192eb0291819362874bbee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E12 10080 bytes

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