Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59015f6a60d1bac…

MALICIOUS

PDF

149.9 KB Created: 2020-08-09 13:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a50c4655fc7422e441ae50a5609a578a SHA-1: 294ba71fd964632f967e51b4c4ee427df4abf793 SHA-256: f59015f6a60d1bac91bd205a7585436f2cada6ee72cc9a73e19d9d33b8bd4c29
90 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The ML classifier strongly indicates maliciousness. The primary IOC is the malicious redirector URL, which is likely used to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 2

  • 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.
  • 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.cc/pify?keyword=school+calendar+2020+17+deped+pdf
    • http://files.karleekilker.com/uploads/1/3/2/6/132695454/e9d61780e743f5.pdf
    • http://files.spectrumequine.com/uploads/1/3/1/3/131380651/8739738.pdf
    • http://files.hburghda.com/uploads/1/3/1/8/131857304/levaputupetowiwo.pdf
    • http://files.freshenitup.org/uploads/1/3/1/4/131438423/loxes_fafupepob_pamedovis_wekuveraf.pdf
    • http://files.boobsandgaming.com/uploads/1/3/1/3/131383294/mopubosirekep.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/finezami.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdf
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/loruduxof.pdf
    • https://cdn.shopify.com/s/files/1/0439/6508/7902/files/24885878262.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5144/files/dovokelobunev.pdf
    • https://cdn.shopify.com/s/files/1/0445/3564/4319/files/adobe_photoshop_2020_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/kasado.pdf
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/tazan.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/8233217171.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/vosidamewepirijaxim.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8318/files/long_to_string_java.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_off000207ad.bin
637d1288689c0453d41f9edc265dd82548b247d1b8e4e846763969cae218dbe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x207AD 5576 bytes
font_01_sfnt_off00021ab1.bin
417e73c46a8604c892655176dab0b99155c2f6ad2a3ce63c43d4881933edc556		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21AB1 15240 bytes

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