Malicious PDF — malware analysis report

Static analysis result for SHA-256 b841c489da814519…

MALICIOUS

PDF

162.1 KB Created: 2020-08-12 13:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b231213ec8a09ba4f2fd2f8bd0e09ea3 SHA-1: 28e72d16fb0101b88dd1937b1800b94dfa763233 SHA-256: b841c489da814519072abb4303299709eb15bd9d07468974575b286bc217c515
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=elementos+arquitectonicos+romanicos+pdf'. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/pify?keyword=elementos+arquitectonicos+romanicos+pdf
    • http://womaw.ctcercle.org/uploads/1/3/2/7/132740405/lobamofuwozovan.pdf
    • http://gaxapibo.nathingjess.com/uploads/1/3/1/6/131606490/roviwasaforoxawawodi.pdf
    • http://files.starspeedwaynh.com/uploads/1/3/2/6/132683063/taxizaf_tenosekalef.pdf
    • http://files.gcrpc.org/uploads/1/3/0/7/130739570/togota_ronurefab.pdf
    • http://files.abcbookreview.com/uploads/1/3/1/6/131606762/sodojolobi-nameku-rijivipi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5583/1445/files/marriage_d_amour_guitar_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdf
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/anorexia_y_bulimia_causas.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7063/files/amazing_grace_my_chains_are_gone.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/67811610280.pdf
    • https://cdn.shopify.com/s/files/1/0433/6962/7799/files/2974006640.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/nemipav.pdf
    • https://cdn.shopify.com/s/files/1/0433/6032/1691/files/posejinejadopev.pdf
    • https://cdn.shopify.com/s/files/1/0434/7160/1817/files/80815922369.pdf
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/biology_project_file.pdf
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/zusevuderuxilemowagawiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/8217/6917/files/cardiopulmonary_resuscitation_procedure.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_off00022b7e.bin
315bdc48027250508ea788a1ac413cf5bd055431701b43c11b0cb63aa0604277		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22B7E 5264 bytes
font_01_sfnt_off00023d42.bin
040cf75f49db8721eccfd954e8f136c6f55dbf56616e0e60ec4eef8e8196d4a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D42 15856 bytes
font_02_sfnt_off00026c09.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26C09 4324 bytes

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