Malicious PDF — malware analysis report

Static analysis result for SHA-256 de1400dbf9dce725…

MALICIOUS

PDF

41.5 KB Created: 2020-08-10 15:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a9a734bb95ac7c91d08f168d85759dd SHA-1: 8151bcdbc7481f9ebfc0e199c850f0be6eee7a4e SHA-256: de1400dbf9dce725a7a98031d7ba7ded860c40e5db0481c2e6474210418adb4f
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Another critical heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute multiple malicious files. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, indicating the primary lure. No scripts were extracted from this sample.

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=ceneval+guia+2020+pdf
    • http://files.boxesss.com/uploads/1/3/0/9/130969322/wigisogudijimaf.pdf
    • http://files.crackwisemag.com/uploads/1/3/1/3/131380482/3747266.pdf
    • http://files.sensibleshock.com/uploads/1/3/2/7/132740479/vasesejakukek_faxej_lelikam.pdf
    • http://files.sunsetridgeatlanesend.ca/uploads/1/3/1/4/131453355/6121706.pdf
    • https://cdn.shopify.com/s/files/1/0437/1097/2053/files/vosiro.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/38628786219.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/fairy_tail_wendy_porn.pdf
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/95606115181.pdf
    • https://cdn.shopify.com/s/files/1/0429/5321/2057/files/45258898175.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/favibejapidurafise.pdf
    • https://cdn.shopify.com/s/files/1/0438/8821/4171/files/clicker_heroes_2_save_editor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/wulotelewijiratadatulegis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7485/4812/files/hypertension_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2269/files/xubedipuruxexojirewepozi.pdf
    • https://cdn.shopify.com/s/files/1/0439/2986/2312/files/mubuzepisexe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045c0.bin
5b0040414184b8832cf767980e379bb49c26911d1a6e1b63ce3971b45a4a077e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45C0 5176 bytes
font_01_sfnt_off00005773.bin
9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5773 2092 bytes
font_02_sfnt_off00006113.bin
3f45023c41dde0da07b4169f4f9b07a199d4ac63e07ce2e45e498e723fca314e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6113 9840 bytes
font_03_sfnt_off000082e9.bin
226a8e4e528c820945b068501793868e9b71e899c703a7ad804f9a2f424011a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82E9 16384 bytes

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