Malicious PDF — malware analysis report

Static analysis result for SHA-256 e02c36d97e69b163…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 15:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0634d21b9286e36a99723b1e8fac6b5d SHA-1: c5754bcd173c85c0f8a49057b45155da7e0aa370 SHA-256: e02c36d97e69b1630f1569983765ad3d5a1ee855b86f2f6fa0714221b7ca4739
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure to download a PDF, which is a common tactic for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=sistem+pendidikan+di+amerika+serikat+pdf
    • http://files.searchfortruthcounseling.com/uploads/1/3/0/7/130739892/pokofeju.pdf
    • http://files.pvclc.com/uploads/1/3/1/0/131070011/nevozebewulala-namadepax.pdf
    • http://files.organicfanatic.com.au/uploads/1/3/1/4/131406592/08dff26f9180.pdf
    • https://cdn.shopify.com/s/files/1/0434/8585/5897/files/gopinubiguke.pdf
    • https://cdn.shopify.com/s/files/1/0430/3673/7699/files/how_to_flatten_a_list_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/reacciones_de_alcanos_y_alquenos.pdf
    • https://cdn.shopify.com/s/files/1/0448/1266/4989/files/tempest_shield_poe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/13764865203.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/65418060272.pdf
    • https://cdn.shopify.com/s/files/1/0437/7985/0397/files/laboratory_definition.pdf
    • https://cdn.shopify.com/s/files/1/0429/0897/5263/files/soldadura_exotermica_cadweld.pdf
    • https://cdn.shopify.com/s/files/1/0438/8978/7048/files/botany_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/zojagoxugetino.pdf
    • https://cdn.shopify.com/s/files/1/0437/8329/1029/files/autodesk_revit_2020_structure_fundamentals.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/91069333400.pdf
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/21846706871.pdf
    • https://cdn.shopify.com/s/files/1/0439/5014/5704/files/manusijovejudani.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_off000062e0.bin
8aa440783d6a05cc1e5cddc46d53eba26596d7483c1f1658fa4280126b8d165e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E0 5324 bytes
font_01_sfnt_off000074e3.bin
811a32160d4218837bc30846650b15d1c28e89d975ccbc032fdbabc8ce2ddf67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E3 9988 bytes

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