Malicious PDF — malware analysis report

Static analysis result for SHA-256 764fae03c77bdeef…

MALICIOUS

PDF

49.7 KB Created: 2020-07-30 06:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 402ce27b4d41ffc8832b23e81f5d0b1a SHA-1: 34cc8409e87f63c62207ab24ee52aedc4433c24a SHA-256: 764fae03c77bdeefb4653755d9a49bbd6647586df6d2929a1639474b7344bf9d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=neonatal+seizures+guidelines+pdf`. This indicates an attempt to lure the user to a malicious site. The document also contains a heuristic for a PDF link farm, with multiple links to external PDFs hosted on Shopify. The presence of multiple unknown URLs suggests a broader campaign. 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=neonatal+seizures+guidelines+pdf
    • http://files.awp-wa.org/uploads/1/3/1/4/131407668/1011946.pdf
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdf
    • http://files.stoughtonfinearts.org/uploads/1/3/0/7/130775561/dd2bc820.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdf
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/vapomofalalilanoxisol.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/juxotoxeloboxapifokixere.pdf
    • https://cdn.shopify.com/s/files/1/0431/0918/7750/files/sovisamugalavifetufesiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/bajusuxubekagumemepet.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/kuzataruwikivuwove.pdf
    • https://cdn.shopify.com/s/files/1/0432/7827/0628/files/migimilid.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/35133455348.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/492216321.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_off000084e8.bin
6020ac303f0cb718f54464dbcf74b089dedb1198ce647aa89cb36f777d7a43a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E8 5112 bytes
font_01_sfnt_off0000965e.bin
cbba266395b157f18f4ed536511352dbc9c7904751450aba1a59c0d882afcc8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x965E 10324 bytes

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