Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec97b1232cc0d40…

MALICIOUS

PDF

43.6 KB Created: 2020-03-26 12:32:06 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 437e6fb326e34186dd95c42016c1685b SHA-1: 698ccba265089868ab24e8cf6530fe393fe0b0a5 SHA-256: 4ec97b1232cc0d40a073819b8afda2658610c49512ef4ad6a137093ce954dffa
62 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, characteristic of a link farm designed for SEO manipulation. The document body, though partially corrupted, contains text related to educational exercises, likely a lure. The primary intent appears to be directing users to a network of hosted PDF files across multiple domains, potentially for further malicious redirection or content delivery.

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://razorguard.org/uploads/1/3/0/5/130588318/130588318.html#ejercicios+de+analogias+para+ni%C3%B1os+de+tercer+grado+de+primaria
    • http://ethnikigrammi.gr/uploads/1/3/0/6/130605380/62f3f413d0923d.pdf
    • http://southamericarealstate.com/uploads/1/3/0/4/130435842/1320927.pdf
    • http://gokevinpoe.com/uploads/1/3/0/2/130287428/6999089.pdf
    • http://bellasicilia.info/uploads/1/3/0/5/130588319/fipeberawejotu.pdf
    • http://illegalgarageconversionsmadelegal.com/uploads/1/3/0/9/130969940/gugenalipiz.pdf
    • http://glightfoundation.org/uploads/1/3/0/5/130541209/87781987a256bf.pdf
    • http://strategicfitnessonline.com/uploads/1/3/0/7/130739256/e14d6e68e568da.pdf
    • http://petalesdefleurs.com/uploads/1/3/0/5/130545753/6514303.pdf
    • http://www.juliayouells-edtech.com/uploads/1/3/0/5/130544090/5683539.pdf
    • http://lynksolutionsllc.com/uploads/1/3/0/3/130313524/pixunorutifetojevor.pdf
    • http://clutterfreefreedom.com/uploads/1/3/0/4/130494389/cbc204f5721e.pdf
    • http://pinkchard.com/uploads/1/3/0/6/130639051/rezizone.pdf
    • http://medleymmc.com/uploads/1/3/0/5/130543020/faropenate-tazigegifigi-dinirixakafew-guvofiwatetuda.pdf
    • http://susaninwonderland.com/uploads/1/3/0/5/130539111/fufolewibeli.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_off00006794.bin
2f90965c5a823fdc61e633fd5067ef6c14ba7d4fd91d30cc1492bf6672c35b73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6794 9140 bytes
font_01_sfnt_off000088aa.bin
99c5a563bd14079918bfffdbdfd95054cabbef0c47e0e3eb61f716c3cd559389		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88AA 16124 bytes

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