Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3f01725de67854e…

MALICIOUS

PDF

36.5 KB Created: 2020-04-09 02:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6fd71fb697444abf2390dd0e98ae08dd SHA-1: f317e1f2862639254cd502931c7c8afbc2b46f29 SHA-256: a3f01725de67854e2ea88bd720757e3925c9e0d94d3729250db797bfc829f708
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This pattern is indicative of a link farm designed to obscure the true malicious intent. The presence of a 'download' keyword in one of the URLs suggests a potential attempt to trick the user into downloading a payload. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the exact payload.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://robertshrigleywoolf.com/uploads/1/3/0/7/130776110/130776110.html#aqw+le+bot+2018+download
    • http://studfinderhomeinspection.com/uploads/1/3/1/3/131383864/82c60fcf.pdf
    • http://gaskeun.com/uploads/1/3/0/5/130588417/3171602.pdf
    • http://quick-rinse.com/uploads/1/3/0/6/130604606/samufesusu_jiwajegewuzina.pdf
    • http://blurrygorilla.net/uploads/1/3/0/7/130775116/2533b312876f2.pdf
    • http://tulsadaylilies.org/uploads/1/3/0/5/130546497/roxuvazebejud-dapif-dawixep.pdf
    • http://riverhawkguidedfishing.com/uploads/1/3/0/6/130639939/jolekixoke-zumonupufej-nomat.pdf
    • http://9f62fcb400.com/uploads/1/3/0/2/130272945/logiwiragivik.pdf
    • http://deletetheanxiety.com/uploads/1/3/0/8/130813701/lumomaxo.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_off000064c2.bin
d0e8a2b23d16d3b2d41b57f67b6fc5d8979155513b2e620deb51f8b31fb95640		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C2 8612 bytes

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