Malicious PDF — malware analysis report

Static analysis result for SHA-256 24015abda15d5ad1…

MALICIOUS

PDF

39.5 KB Created: 2020-03-30 02:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6aab28c8941fcc1b82fd98b1323d47ef SHA-1: 5d8ce1eee64444c0bc09280479d8dafa28d640f4 SHA-256: 24015abda15d5ad1732678cf3d5daa682125adf66d1d2cbc21bd0da6f4f9655f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, a technique often used for SEO spam or to distribute malicious payloads. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a mass of external PDF links. The document body, though partially corrupted, contains a URL that is also present in the list of external links, reinforcing the malicious intent. The primary attack pattern involves directing users to a network of suspicious domains.

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://host.creativedatainc.com/uploads/1/3/0/3/130313157/130313157.html#concepto+de+sistemas+economicos+yahoo
    • http://the50lb.com/uploads/1/3/0/5/130588799/1701453.pdf
    • http://thenailcandy.com/uploads/1/3/0/3/130323559/41a12d2d5.pdf
    • http://radikal4kidzinc.com/uploads/1/3/0/4/130476454/1726206.pdf
    • http://azimuts.org/uploads/1/3/0/5/130540116/926004.pdf
    • http://calprestige.com/uploads/1/3/1/3/131398108/b1bc619b.pdf
    • http://montanabushcraft.com/uploads/1/3/0/7/130739073/058ec9.pdf
    • http://mcworldtravel.com/uploads/1/3/1/3/131378850/4010989.pdf
    • http://voteforkumar.ca/uploads/1/3/0/6/130639397/d1ace9c9f3692f1.pdf
    • http://16-capital.com/uploads/1/3/0/2/130291624/7bf432d1.pdf
    • http://elitebodycontoursnw.com/uploads/1/3/0/7/130740610/zunoxudasogisu.pdf
    • http://esseci.info/uploads/1/3/0/4/130435777/9840f513f532.pdf
    • http://coachshreyas.com/uploads/1/3/0/3/130313274/gapezo.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007181.bin
5b1e9a000eac21e4f49a5a788e7b70f467d9e254912ca8da0193cdd85dd5ba68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7181 8172 bytes

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