Malicious PDF — malware analysis report

Static analysis result for SHA-256 212f37ba22a9c9e0…

MALICIOUS

PDF

48.4 KB Created: 2020-03-21 21:10:20 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 58cd05073f8e4e3ae7c69ae4aff41f64 SHA-1: 893e9df51366427e25d6cbc11fba15cbebea6c1b SHA-256: 212f37ba22a9c9e0f0a76cabb61e38d6f66f202dda5d014f343ac929bb0d18de
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though partially corrupted, contains text related to 'Mixed sine and cosine rule worksheet', suggesting a lure to disguise the malicious intent. The primary goal appears to be directing users to a network of linked websites, likely for SEO manipulation or to host further malicious content.

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://dancinggoatsanctuary.com/uploads/1/3/0/7/130740128/130740128.html#mixed+sine+and+cosine+rule+worksheet+tes
    • http://www.spawngalaxywars.com/uploads/1/3/0/6/130639409/8129101.pdf
    • http://wp2.elkethoms.com/uploads/1/3/0/3/130313414/3cfd7d81ac8c.pdf
    • http://fitnice.net/uploads/1/3/0/4/130483390/dovokowebiwufi-xugawekuzipilu-dodasetoko-xatidefal.pdf
    • http://prettycharmedcraftkits.com/uploads/1/3/0/5/130545484/65366173b93026.pdf
    • http://hcaeitworkforce.at/uploads/1/3/0/7/130739333/sosamuj_wowobemabizaxun.pdf
    • http://fh-interior.com/uploads/1/3/0/6/130639270/lijexewav.pdf
    • http://www.wattermarks.com/uploads/1/3/0/6/130639306/wasaza.pdf
    • http://vicsurprisejewelry.com/uploads/1/3/0/8/130813917/2158060.pdf
    • http://albanyimprov.com/uploads/1/3/0/2/130292014/vesawopuk.pdf
    • http://www.productionscanimagine.com/uploads/1/3/0/6/130620849/tepuzewiwugub-bimoner-luxosafivi-zajamefa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007018.bin
a85ebc396567faa274212c92547f6803afc41aed47f2c53aed4c1e668c6f0020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7018 8688 bytes
font_01_sfnt_off0000918f.bin
8380f0bdeb8964bf2467a56a0e6eeafa6deb1e629a7e09bf2a4d08f4046ea7c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x918F 3036 bytes
font_02_sfnt_off00009e24.bin
75ad5726b260fca9c3b66ca94450239fbc156c1891091fcfcfab965e4b2051b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E24 16376 bytes

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