Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b43e308d23bf320…

MALICIOUS

PDF

38.0 KB Created: 2020-08-26 21:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9f6b00aee7aed41e164f1075c669170 SHA-1: 09e6573b3b6ff11cc2630fb0d2972d1f421b45a6 SHA-256: 2b43e308d23bf3209ac5b5a9c0e8675fad43782509269f88d6645d46dfc28346
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a Samsung notification download, which is a common lure for phishing or malware delivery. The ML classifier strongly flagged this PDF as malicious. The embedded URL https://ttraff.com/pify?keyword=samsung+galaxy+message+notification+sound+download is the primary indicator of malicious intent, likely leading to a malicious site.

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.com/pify?keyword=samsung+galaxy+message+notification+sound+download
    • http://files.soccerwithoutboundaries.com/uploads/1/3/0/7/130740591/gatojazexafife-suxeja.pdf
    • https://cdn.shopify.com/s/files/1/0437/6372/8545/files/nafowubizilagubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/xumisibejawosuvas.pdf
    • https://cdn.shopify.com/s/files/1/0436/9108/1882/files/pepusuwenamakozujojada.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/consecuencias_del_bullying_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0432/3436/1503/files/14036667614.pdf
    • https://cdn.shopify.com/s/files/1/0434/1740/3557/files/building_materials_company_profile.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/avast_antivirus_license_key_free_2038.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0535/files/vivevobisezorixelu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3630/9666/files/basic_guitar_lessons_for_beginners_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7809/0901/files/poviveguduzozigomilil.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/tirugele.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_off000055bf.bin
2bd8995460020433b4df18e9b36b4920dff22040cc264c8996174ace739b02f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55BF 5608 bytes
font_01_sfnt_off000068e0.bin
96c89448ae30d2f14f67840762848acf8e4a1fee7d4d50be86a6dfffc6347ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E0 10024 bytes

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