Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30809a4cbfe842c…

MALICIOUS

PDF

43.1 KB Created: 2020-04-09 07:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6eba9fd9d23222b4833785038b35a211 SHA-1: 22be565b2508d779eda4302f617d8730e5a3c3e1 SHA-256: b30809a4cbfe842c531d17f06b086bd7c1758561e4dffa7918ebdbfae37293f0
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential link farm. The document body, though heavily obfuscated, contains references to URLs that are also listed in the extracted IOCs. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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://timeframingconsulting.com/uploads/1/3/0/6/130604158/130604158.html#letra+de+forma+pontilhada+para+imprimir
    • http://laurajentertainment.com/uploads/1/3/1/3/131383434/xabotisumaf.pdf
    • http://trendingscore.com/uploads/1/3/0/4/130436121/a30b632cd35d.pdf
    • http://sangev.com/uploads/1/3/0/7/130775192/xazakuvoj_kizexinolidaru_dogizom.pdf
    • http://helping100people.org/uploads/1/3/0/5/130544313/zafugifuwikes.pdf
    • http://northshorepaddlerace.com/uploads/1/3/0/7/130776007/5010194.pdf
    • http://creativecraftsbycarrie.com/uploads/1/3/0/8/130814081/dinoxevejotob.pdf
    • http://etix2go.com/uploads/1/3/0/5/130551325/sixaregoj.pdf
    • http://shinebossautocare.com/uploads/1/3/0/6/130604667/fasil.pdf
    • http://portlandcarglassrepair.com/uploads/1/3/1/4/131411411/7ddf1032a2.pdf
    • http://praganatranslations.org/uploads/1/3/1/3/131397942/muvojo-rezidisodinewor-jepurekabonezu.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_off0000689a.bin
73dcd85c61cdb0e06c2f1b075262bbca94436b28ba32d9b92c33070f9176bfce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689A 9456 bytes
font_01_sfnt_off0000886b.bin
93d9af6b22df31d7bfaa4e331e74bfacafc1a89eaf15e29e75d9822efec386d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x886B 16116 bytes

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