Malicious PDF — malware analysis report

Static analysis result for SHA-256 590918a76cd7c507…

MALICIOUS

PDF

34.5 KB Created: 2020-08-30 03:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 801e0f339dfcdac0da9c0fc808979146 SHA-1: 62c3dcd5f0033749310db8edeb91ad16bac5d6f8 SHA-256: 590918a76cd7c507318df56337febc1c6392f12cb293628266c9bc3f773a0b6e
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as educational content. The document body, though heavily obfuscated, contains the URL which is also listed in the heuristics. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO poisoning or to obscure malicious destinations. No scripts were extracted from this sample.

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.com/wix?keyword=examen+lainitas+quinto+grado
    • https://static.usrfiles.com/ugd/80c1db_994293099bf941d7a7c7753871b4b091.pdf
    • https://static.usrfiles.com/ugd/ab0441_77dfe87aed8742929673a2344afad8ba.pdf
    • https://static.usrfiles.com/ugd/2b3f46_9ac60d1ffb2d435d9c0a4622f3247285.pdf
    • https://static.usrfiles.com/ugd/0779a3_3c4fe3fc986a42f88fae1c1b36d64530.pdf
    • https://cdn.shopify.com/s/files/1/0431/0931/8813/files/dreambox_dcc_2._95_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/51523851631.pdf
    • https://cdn.shopify.com/s/files/1/0435/5876/4696/files/jurnal_internasional_bronkopneumonia.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/jaferoribazukilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/binomial_distribution_proof.pdf
    • https://cdn.shopify.com/s/files/1/0432/8167/8494/files/7897219483.pdf
    • https://cdn.shopify.com/s/files/1/0436/0706/4734/files/jquery_ajax_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/81914475184.pdf
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/xamuzebijevisapis.pdf
    • https://static.usrfiles.com/ugd/c33cdb_42bed23985ff4e6d8a302fbad1d063de.pdf
    • https://static.usrfiles.com/ugd/585b1d_9b7d118841ad4b34ac1522747253623e.pdf
    • https://static.usrfiles.com/ugd/857e61_b29a488589074828920e63d60dba5988.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000490d.bin
f93eb21304b5a1649206e3e4a339f14fff8f9e36688bbb43e9027d09992587ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x490D 5296 bytes
font_01_sfnt_off00005af3.bin
8c41250ea50021062b3e64282795c2139365e3a263b93aaf3eb75e3a540ecbbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF3 10404 bytes

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