Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39ed1f2f5f1f31c…

MALICIOUS

PDF

58.8 KB Created: 2020-08-20 11:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9702bffd8542f74c8cd034b5f3c115f9 SHA-1: 6d6344f87252fb64912f733978060f6cda059d2b SHA-256: e39ed1f2f5f1f31c7a7a49712e02b8dcb41ff342aa1ba4199afd904d958cb181
128 Risk Score

Malware Insights

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

The PDF document was flagged for containing a large number of external links, a technique often used to distribute malware or conduct phishing attacks. One of the primary links, 'https://ttraff.com/pify?keyword=zimbabwe+affidavit+form+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The presence of a 'download button' heuristic further suggests a lure-based attack.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=zimbabwe+affidavit+form+pdf
    • http://files.alliancebulldogs.org/uploads/1/3/1/4/131455158/b0e58437118ae5.pdf
    • https://cdn.shopify.com/s/files/1/0435/2779/8943/files/stop_drop_shut_em_down.pdf
    • https://cdn.shopify.com/s/files/1/0431/3359/9911/files/kojefikifup.pdf
    • https://cdn.shopify.com/s/files/1/0430/6357/4682/files/mass_effect_3_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/siboxukokezoxeralapemav.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9586/files/52005275467.pdf
    • https://cdn.shopify.com/s/files/1/0439/1324/8923/files/ripojojubilapadinuboja.pdf
    • https://cdn.shopify.com/s/files/1/0436/2751/1961/files/davotevofozekomajuvom.pdf
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/subil.pdf
    • https://cdn.shopify.com/s/files/1/0432/8020/3944/files/hiperalgesia_y_alodinia.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_off00009dec.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DEC 2828 bytes
font_01_sfnt_off0000a7e7.bin
79d801b863b0cf9a2aa3ada3cb979deb44beec19de69d5c4e1d3ee5107737fca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7E7 5224 bytes
font_02_sfnt_off0000b9ab.bin
8abc7505751906b11aa21d7e8ff8b3f3608b536c1bc6f7fb21988478d3239697		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9AB 10152 bytes

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