Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f13d014e953442…

MALICIOUS

PDF

37.3 KB Created: 2020-06-12 06:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58691c7520d25de1e66805ff034f0583 SHA-1: 76405833f55a8a5d1d19d644f36bc211c8b65415 SHA-256: f9f13d014e9534421c1568ed259e0b57b00a95c35780eb32370dbd5eef3d3832
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The document body is heavily obfuscated but contains fragments of URLs, reinforcing the link-based attack pattern. No scripts were extracted, and the primary malicious activity appears to be the distribution of numerous external links.

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://lunarlabelllc.com/uploads/1/3/1/4/131406092/131406092.html#math+worksheets+for+preschool
    • http://carstenwalker.com/uploads/1/3/0/5/130550684/futijukolefidebug.pdf
    • http://aboutmom.nl/uploads/1/3/0/7/130739399/225c47e0451.pdf
    • http://kayandmay.com/uploads/1/3/1/4/131437834/dc7dd7207ed3906.pdf
    • http://qclothing.com/uploads/1/3/0/2/130288511/2826850.pdf
    • http://freereindesigns.net/uploads/1/3/0/2/130270823/05e31c40.pdf
    • http://naapoc.org/uploads/1/3/1/4/131453484/mijatuji.pdf
    • http://aeropac.vip/uploads/1/3/0/2/130272363/1904743.pdf
    • http://nationalsolargroup.net/uploads/1/3/0/3/130323158/9ad95b.pdf
    • http://haverhillelite.com/uploads/1/3/0/6/130639728/wepofifelud.pdf
    • https://vanubewo.files.wordpress.com/2020/06/digiliratukabaxanojiparas.pdf
    • https://zawitij.files.wordpress.com/2020/06/5706388350.pdf
    • https://nezigos.files.wordpress.com/2020/06/pitutipukakuzogirurewizi.pdf
    • https://zedipuxari.files.wordpress.com/2020/06/vuzulifugovixatasu.pdf
    • https://wegupezaf.files.wordpress.com/2020/06/mutogulas.pdf
    • https://nogilofonula.files.wordpress.com/2020/06/lafumipup.pdf
    • https://koxezapujuf.files.wordpress.com/2020/06/4858113258.pdf
    • https://zodizijemas.files.wordpress.com/2020/06/41371897658.pdf
    • https://fanutuzak499104460.files.wordpress.com/2020/06/37561720367.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_off0000683d.bin
e494cdf8453dc03b03bf395409c21111515cadd727e8a5f025c73d5f5aa5bf2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 9808 bytes

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