Malicious PDF — malware analysis report

Static analysis result for SHA-256 932d0dedd0782f52…

MALICIOUS

PDF

47.0 KB Created: 2020-09-10 09:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bce4b18755859dbb57d5e8826b1407e6 SHA-1: 3d40c8ef16633178b7dbda5c09674364fa63eb91 SHA-256: 932d0dedd0782f523b06b2e4ce2fd979feaab232f425d5375a93236ed5c89765
128 Risk Score

Malware Insights

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

The PDF file contains a mass external PDF link farm, with many links pointing to shopify.com, likely for SEO manipulation. A critical heuristic identified a link to a known malicious redirector, ttraff.me, which is presented in the document body as a download link. This indicates a social engineering attack aiming to redirect the user to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=wedding+invitation+templates+for+whatsapp
    • https://cdn.shopify.com/s/files/1/0434/6976/6821/files/70547278799.pdf
    • https://cdn.shopify.com/s/files/1/0432/9934/0448/files/memizetexevexomumapadonev.pdf
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/10482779390.pdf
    • https://cdn.shopify.com/s/files/1/0428/4098/1660/files/moxokitulewutowege.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/sudiwujijogofaworeso.pdf
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/fexoloxaminima.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/42702038917.pdf
    • https://static.usrfiles.com/ugd/4dded2_66051ca84a534d9387cecf0822f14d96.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_370ced61c7bb4b5c84df82c07ed38bbf.pdf
    • https://static.usrfiles.com/ugd/9734e7_30a7773fe16748f381de7062dc611e04.pdf
    • https://static.usrfiles.com/ugd/fdee49_544e3929393b4af18fb8671d1cd1d2a1.pdf
    • https://static.usrfiles.com/ugd/d79848_94b99331eaaf4bb89cdd7eaa9a7e9366.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/jokikapelexusozusexeve.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/milizarivekiberofesaxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1215/3766/files/solarwinds_advanced_subnet_calculator_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/understanding_the_linux_kernel_free.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_off00006b2d.bin
969c73702baa91b285c7f725ad75c360332e5118415f7d434a3e3dc4793f3502
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2D 5408 bytes
font_01_sfnt_off00007d7b.bin
c71bbabcf31c3de576c1da18bbb94c2a8c3f259bf5fe104cbd520be797db6ae1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7B 10316 bytes
font_02_sfnt_off0000a0be.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BE 4324 bytes