Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba6ea6e12ceff81…

MALICIOUS

PDF

50.8 KB Created: 2020-08-10 07:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fedb673679ae95659f9d6f5c89e8a95a SHA-1: ceed81e15a6c4157241766754051f1469fd9d963 SHA-256: 3ba6ea6e12ceff812692c3f61c627494cd812f9587d85a2a5accee426b20a755
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning attempt. One critical heuristic firing indicates a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body text is heavily obfuscated but contains the same URL as the redirector, reinforcing its malicious intent. 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.cc/pify?keyword=insuficiencia+cardiaca+congestiva+signos+y+sintomas+pdf
    • http://files.mymonarchs.com/uploads/1/3/0/8/130814115/jatob.pdf
    • http://files.painsfireworks.net/uploads/1/3/2/7/132712185/datoto.pdf
    • http://files.brockeyinsurance.com/uploads/1/3/2/7/132712235/d0569ec60.pdf
    • http://warave.spiritual-alignment.com/uploads/1/3/0/9/130969489/gokipegesefo_xikodug_nogokojepubud_busonodeji.pdf
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/close_to_you_carpenters_piano.pdf
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/93423674959.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7098/files/59804009513.pdf
    • https://cdn.shopify.com/s/files/1/0447/3107/2666/files/types_of_cell_communication.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/dogogekar.pdf
    • https://cdn.shopify.com/s/files/1/0431/8262/0834/files/60311076719.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54101174921.pdf
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/12193248595.pdf
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/kubijubulipago.pdf
    • https://cdn.shopify.com/s/files/1/0433/5307/9963/files/buwukokejanabaxasov.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_off000074ff.bin
0aa0fc08212d27c429f52dd3356e8f99107306b32dd149e98743188e2ebf822e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FF 5424 bytes
font_01_sfnt_off00008766.bin
0df43a3b04a146f37f9aad5e8bd4ba640c9b0d111f89e02e4766c23305a2284a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8766 12560 bytes
font_02_sfnt_off0000adef.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADEF 4324 bytes

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