Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b203ea4898236f…

MALICIOUS

PDF

43.9 KB Created: 2020-08-16 20:03:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0b576ecfbb41c4299ff881ea127ef13 SHA-1: 23cd4be3ae0b1b0b0fd2de9efd8cbcaae7d6e384 SHA-256: 30b203ea4898236f079bc45d2f07d5adff1ad7e9fdab5a70b52473740bb1d92f
150 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.ru, which is disguised as a search result for emulator games. This redirector likely leads to a malicious payload. The PDF also contains a large number of links to external PDFs hosted on Shopify, suggesting a link farm or SEO poisoning attempt to increase visibility of the malicious content. The ML classifier also strongly indicated maliciousness.

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.
  • 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.ru/pify?keyword=my+boy+gba+emulator+games+for+android
    • http://files.mermazingbeautypearlswithcasey.shop/uploads/1/3/1/3/131380063/rixojetofuduvol.pdf
    • http://pugutib.kenyatyson.com/uploads/1/3/2/7/132712615/2322506.pdf
    • http://files.fsrental.com/uploads/1/3/1/3/131398533/9692912.pdf
    • http://bowujesuj.ballyloobyns.com/uploads/1/3/1/6/131636908/9246052.pdf
    • http://files.passport2pain.com/uploads/1/3/0/7/130738701/kerigidixobu-tokumurupoj-jofamabum.pdf
    • https://cdn.shopify.com/s/files/1/0430/9050/9973/files/patogenesis_aterosklerosis.pdf
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/guvemexifatu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8680/files/4785244360.pdf
    • https://cdn.shopify.com/s/files/1/0449/8548/3422/files/libro_ganoderma_lucidum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/gipatikaralojodaxeja.pdf
    • https://cdn.shopify.com/s/files/1/0434/3051/0758/files/attestation_de_prise_en_charge_visa_canada.pdf
    • https://cdn.shopify.com/s/files/1/0434/5679/0681/files/63661822241.pdf
    • https://cdn.shopify.com/s/files/1/0436/1935/2740/files/biology_books_for_secondary_school.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_off00006c4d.bin
944021b77d4121f0810a3c71172d76e14365b1b72f612e6bd3bbf3aa00842ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4D 5476 bytes
font_01_sfnt_off00007eda.bin
1c9ff5d72cb182f562c4951174e3e0760d2d624a9ac15eebb8e6dc573e228fd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDA 10420 bytes

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