Malicious PDF — malware analysis report

Static analysis result for SHA-256 21fa06a9050dea36…

MALICIOUS

PDF

54.6 KB Created: 2020-05-14 04:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fe602b5128a5af39268c0e9657f65a42 SHA-1: ee41b64c299fd50b417f80476ab1358e235cabcc SHA-256: 21fa06a9050dea36d5ef085dee2877c8bb3ababe44267e4482be89946de05faf
122 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection 'Pdf.Dropper.Agent-9542291-0' indicates it's recognized as a dropper. The embedded URLs, such as http://thismaycomeinhandy.com/uploads/1/3/1/3/131383333/131383333.html#dotabuff+tidehunter+guide, suggest a lure to potentially harmful content.

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.
  • ClamAV: Pdf.Dropper.Agent-9542291-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9542291-0
  • 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://thismaycomeinhandy.com/uploads/1/3/1/3/131383333/131383333.html#dotabuff+tidehunter+guide
    • http://mlmultiservice.com/uploads/1/3/0/6/130604105/nonugodijug_gulovegut_kedezeb_vugebep.pdf
    • http://laketanglewood.net/uploads/1/3/0/6/130604610/8491270.pdf
    • http://prolawnstally.com/uploads/1/3/1/3/131380284/vopim.pdf
    • http://comercializadora.org/uploads/1/3/0/8/130814342/xopazerukovubigezuli.pdf
    • http://cassidywilkozekvirtualassistant.com/uploads/1/3/1/0/131070485/a7b42405f.pdf
    • http://encweddingtalk.com/uploads/1/3/0/2/130274267/zotisiso_zitupimokovowi_kefejesod.pdf
    • http://chambres-carpenoctem.com/uploads/1/3/0/8/130873790/zobazutamuwazos.pdf
    • http://wecanread.net/uploads/1/3/1/4/131454065/4495754.pdf
    • http://dealiptv.com/uploads/1/3/0/7/130775567/gezaderes.pdf
    • http://hannahcooke.com/uploads/1/3/0/8/130813834/noxokuvo.pdf
    • http://learn-ahead.com/uploads/1/3/0/7/130776368/jatonufoxadofabo.pdf
    • http://papamometalworks.com/uploads/1/3/0/6/130640059/9f6384db70473.pdf
    • http://cloud9chocolates.com/uploads/1/3/0/5/130543190/1846020.pdf
    • http://australianinteriorsdesign.org/uploads/1/3/0/6/130640078/faxisopo.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_off0000663f.bin
7523436eab92687402cbcc34c7d841b51f65e8ac30f578b808930d1e134b9bf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663F 20188 bytes
font_01_sfnt_off0000a60f.bin
7a018482e11ed881c99d64ac9e087f1b9858c785fbd8761a6e1019683c06e064		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA60F 12948 bytes

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