Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d0978bf10ad57d…

MALICIOUS

PDF

40.6 KB Created: 2020-04-09 15:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 840b302bd165e35d27578a0eabb6d50e SHA-1: 33fbc5d92efa0321bd78c45a9485087382fc72e5 SHA-256: 27d0978bf10ad57d5c636567c6cc58c8e33a1a51d47c1e92c49b45c10a9cdf99
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links, many of which point to other PDFs hosted on similarly structured domains. This indicates a link farm or SEO abuse pattern. The primary URL, http://sadiths.com/uploads/1/3/0/7/130739831/130739831.html#sin+cos+tan+table+trick+hindi, suggests a lure related to mathematical tables, but the overall structure points to a malicious intent of redirecting users to potentially harmful content or generating ad revenue through deceptive means.

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://sadiths.com/uploads/1/3/0/7/130739831/130739831.html#sin+cos+tan+table+trick+hindi
    • http://sistermissionaryprep.com/uploads/1/3/0/8/130814788/723374bb8ed4442.pdf
    • http://arsfabricandi.com/uploads/1/3/0/2/130289428/9589439.pdf
    • http://aboveandbeyondscaffolding.com/uploads/1/3/1/3/131378838/popekubawi.pdf
    • http://diligentdiamond.com/uploads/1/3/1/3/131381602/71dcf078e63fbb.pdf
    • http://kingstoncollegeinternational.com/uploads/1/3/0/7/130776724/fubet-radixatifuk-dijudabel.pdf
    • http://deapires.com/uploads/1/3/0/2/130291779/924f6feb80e3e.pdf
    • http://techtable.co/uploads/1/3/1/4/131438557/zibugurerekono-fozezefafepo-tetadawasapa-sezetixakasopo.pdf
    • http://gigispastrycafe.com/uploads/1/3/0/3/130379351/luzolemig_nugexodifujus_pegogok.pdf
    • http://iamsrvnt.org/uploads/1/3/0/2/130272426/fufukoraz.pdf
    • http://pureship.info/uploads/1/3/1/4/131406970/d0e790ae8e.pdf
    • http://hollandfotovideo.com/uploads/1/3/0/2/130291658/melimaderilesamemen.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_off0000694b.bin
4d205b2f9c811ec7837c978aa15fdfa223a8c6ebb53b3bf89390d741cf8829ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x694B 9116 bytes
font_01_sfnt_off00008c29.bin
11eff0542ee112a7a4f3d5fa86892f13f7f7c80edb17354215cea33bb7714487		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C29 2768 bytes

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