Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6176ac0964e24c…

MALICIOUS

PDF

34.0 KB Created: 2020-03-30 04:42:44 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5e93b771f6d6b68e2ccbe741e9ef1788 SHA-1: 0cf2141d5aecc01725009e9ecb87ac50739cbca3 SHA-256: ab6176ac0964e24c56423f610916c26a729a08e47dce233cbcbab311578b081e
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially obfuscated, contains text related to 'Ciencias 1 biologia secundaria serie aprender a ser pdf' and includes several URLs. These URLs point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. No scripts were extracted from this sample.

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://ndtasanantonio.org/uploads/1/3/1/3/131381052/131381052.html#ciencias+1+biologia+secundaria+serie+aprender+a+ser+pdf
    • http://changraphics.com/uploads/1/3/1/1/131164159/wukadav-vovuvasapubu-vuwarasux-vubuxodase.pdf
    • http://autochipkeysandremotes.com/uploads/1/3/1/4/131406062/dolimitabuba.pdf
    • http://mixla1176.com/uploads/1/3/0/6/130605173/lelesesobidov.pdf
    • http://minimortgage.org/uploads/1/3/0/8/130874237/98740d3fd0cdd.pdf
    • http://youngbinpark.com/uploads/1/3/0/7/130738929/wixaduwabek.pdf
    • http://mysafeheaven.com/uploads/1/3/1/4/131406629/pupuvizijifale_palujewemarunar_fogigib.pdf
    • http://neugewonnenerottweilers.ca/uploads/1/3/0/6/130604009/91562bf4.pdf
    • http://droneswrx.com/uploads/1/3/0/8/130814469/2412746.pdf
    • http://joinedinaction.org/uploads/1/3/1/3/131398547/zobipetukofa_sofofokiwux_bezikomobexal_dezefipobudusum.pdf
    • http://imagineyukonhuts.ca/uploads/1/3/0/8/130814351/fopejepelibe.pdf
    • http://nextlevelelite.org/uploads/1/3/0/4/130488924/1058f5a479f477.pdf
    • http://meinersoakspetcare.org/uploads/1/3/0/6/130604518/6649068.pdf
    • http://spreadyourwingstravel.net/uploads/1/3/0/5/130589035/puren_volilixisos_zenoxagif_wemuge.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_off00005b43.bin
4a94687dee5ec7de38de0a5995959bf48c003c13fe7fdc76b90417857130efe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B43 8620 bytes

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