Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf034feddca24ae6…

MALICIOUS

PDF

82.1 KB Created: 2020-03-12 02:11:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7a39b8e2508a47217e077a5320716379 SHA-1: 900875b7706a01c8f405ad0c9207d0ed23ddad00 SHA-256: cf034feddca24ae650dd96342a0f7749417da97ba99a38f2ecaab214950d8518
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. The document body, though partially corrupted, contains a URL that points to a page with a title related to Indian scientists and inventions in Tamil. This suggests a lure to attract users to click on the numerous embedded links, which are likely designed for SEO manipulation or to distribute further malicious content. 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://drobgyn.net/uploads/1/3/0/6/130621575/130621575.html#indian+scientists+names+and+their+inventions+in+tamil
    • http://micahtwilson.com/uploads/1/3/0/4/130476493/0bc2867a448.pdf
    • http://www.nickalisknight.com/uploads/1/3/0/7/130776070/3846679.pdf
    • http://farmnavigation.com/uploads/1/3/0/2/130274088/zufobirixoxosaji.pdf
    • http://uvgelpolish.com/uploads/1/3/0/5/130551185/buwoxibijefo-ganur-joxawodawoparu-zomowuzeweb.pdf
    • http://nothingeasylifestyle.com/uploads/1/3/0/7/130776381/rikadepagajavano.pdf
    • http://groom-construction.com/uploads/1/3/0/7/130775203/zidujexuwidu-widig-soparitopipi.pdf
    • http://kdmorano.com/uploads/1/3/0/6/130605017/4590730.pdf
    • http://orleansmedicalcenter.org/uploads/1/3/0/5/130546543/1da614a47.pdf
    • http://santeeautodetail.com/uploads/1/3/0/7/130775843/5572845.pdf
    • http://wd7nz.bpmtc.com/uploads/1/3/0/5/130590374/wupozomite.pdf
    • http://lennygartstudios.com/uploads/1/3/0/5/130588492/popumiwe.pdf
    • http://propertynearyou.ph/uploads/1/3/0/8/130814058/6054173.pdf
    • http://womadixfund.org/uploads/1/3/0/9/130969000/valojaxafijek-gikenakop.pdf
    • http://www.democraticgovernanceinternational.com/uploads/1/3/0/7/130739618/rozaweweva.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b5d0.bin
0f94fe996a96367cb0acbf72858008d33508ea6a5653bdb716d05bbff078efa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D0 25304 bytes
font_01_sfnt_off0000faaa.bin
df8d5164745f4b2d08becd6eba32d790b5b8d392026d93a94ca568c3fd040431		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAA 8800 bytes
font_02_sfnt_off00011b82.bin
83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B82 2604 bytes
font_03_sfnt_off000124b5.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124B5 16036 bytes

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