Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3554488ddd6b97…

MALICIOUS

PDF

129.0 KB Created: 2020-04-11 23:22:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 415bcb738713789feb85e78487fa976d SHA-1: e758db9bbedecd7ac382631454a138f8b92d050b SHA-256: cf3554488ddd6b9763bc56f3fcb6695213e20af87180259ed7e11769f09fd5be
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. The document body suggests it is disguised as 'application instructions' to lure users to these external sites. This behavior is characteristic of SEO spam or phishing campaigns designed to drive traffic to malicious or ad-filled pages. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://sweetscarlettacres.com/uploads/1/3/0/7/130775983/130775983.html#aqua+mix+enrich+n+seal+application+instructions
    • http://walthamforestwomeninbusiness.com/uploads/1/3/0/8/130814328/vukitewerulot.pdf
    • http://bamabreddoodles.net/uploads/1/3/1/3/131398110/gilos_vuwitamajotovis_miludinuke_zirinupuvovobi.pdf
    • http://emilywesttv.com/uploads/1/3/0/7/130740143/datisofuvi.pdf
    • http://solacevirtualtours.com/uploads/1/3/0/2/130288421/c08001a8c.pdf
    • http://prometheanpress.net/uploads/1/3/0/5/130551794/dususanuxenuv_ziweg_vawati_veritu.pdf
    • http://melissacierley.com/uploads/1/3/0/4/130435772/xoxogajusijanujesi.pdf
    • http://juliehara.com/uploads/1/3/0/4/130477003/vofib.pdf
    • http://rcdesigns-online.net/uploads/1/3/1/3/131383860/retivokutazi.pdf
    • http://greyplane.com/uploads/1/3/1/3/131384284/6023915.pdf
    • http://oneandonlyhandyman.com/uploads/1/3/0/6/130639500/midejo.pdf
    • http://nubetix.com/uploads/1/3/1/3/131398526/510072.pdf
    • http://rlwhitephoto.com/uploads/1/3/1/4/131452958/pixevudefadu.pdf
    • http://akneadedretreat.com/uploads/1/3/0/8/130873984/basitixin.pdf
    • http://fepev.com/uploads/1/3/0/7/130738777/622e5c377d4cdc.pdf
    • http://red-poker.net/uploads/1/3/0/4/130488158/a3e0e16af3.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_off0001caa4.bin
4b8e411afb5781e1069ddaf2ce0c17b5a618dc5b3dcd76bb9cbee9f61c67038b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CAA4 9100 bytes
font_01_sfnt_off0001ed0b.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1ED0B 2616 bytes

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