Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8ea494c95852e7…

MALICIOUS

PDF

42.8 KB Created: 2020-08-10 23:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6334eb915f7ebf3f11f7459d9441caab SHA-1: c74224b29197b38a9c33863af17d9125d164a428 SHA-256: db8ea494c95852e7216cdd7a01c2dd2f12f3a84dada86f40b2d8a72b50ec26ef
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'medical certificate for college admission pdf' and the malicious URL. This suggests a phishing or scam attempt to redirect users to malicious content.

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=medical+certificate+for+college+admission+pdf
    • http://files.retirementtimeline.com/uploads/1/3/0/8/130874143/bugimoxawa.pdf
    • http://files.leopardstouch.org/uploads/1/3/0/7/130739415/nasegowonimeka_xidawokixev_pedebubijixe.pdf
    • http://files.petermrusso.org/uploads/1/3/0/7/130775712/3509939.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/xalivuramupawumuwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8248/0806/files/39269764847.pdf
    • https://cdn.shopify.com/s/files/1/0428/8797/0975/files/52666197050.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/63261007718.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/xogudowiritogemapetuvukaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/40231292001.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/14131217498.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/79019961920.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/mercedes_a_class_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0433/4311/8495/files/sipamatudosememojuzofoko.pdf
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/takezavukutozagimotuv.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_off00006925.bin
537f8180d8ff2c801b542b1624dc5f52b9cd68a494e3b7249bebdd43099f37a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6925 5480 bytes
font_01_sfnt_off00007bb4.bin
448f773cc46fc63242609505e7752cd7072e5a7a4d720437cbc5f74a1a966fa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB4 9952 bytes

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