Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95d32e3bf3291c2…

MALICIOUS

PDF

50.8 KB Created: 2020-05-31 17:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a5c9a2dedae1a3432ba3116b599f08a SHA-1: 6564e204334241531444d65119303efaa9617933 SHA-256: e95d32e3bf3291c2b3352762c600314343eab903a0b0c22fedecdbc0779e965c
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 to various domains, a technique often used for SEO manipulation or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, pointing to a dominant host '74-123-72-55.mgwnet.com' and numerous other linked PDFs. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact payload. However, the sheer volume of external links suggests a malicious intent to redirect users to potentially harmful sites.

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://rethinkorganics.ca/uploads/1/3/0/9/130969774/130969774.html#past+simple+regular+verbs+ppt
    • http://74-123-72-55.mgwnet.com/uploads/1/3/0/2/130288421/0ff39bb.pdf
    • http://whagoingon.com/uploads/1/3/1/6/131636665/3095500.pdf
    • http://taylomack.com/uploads/1/3/0/7/130776790/94a2d4d5b4.pdf
    • http://changetravels.de/uploads/1/3/0/6/130605306/xireg.pdf
    • http://freinokorhostel.com/uploads/1/3/0/6/130605165/xobagatidofavak.pdf
    • http://utahsixmonthbraces.com/uploads/1/3/1/4/131453896/xizovisa-wositaw.pdf
    • http://washingtongrizzlieswrestlingclub.com/uploads/1/3/2/3/132303396/xotafewitizu.pdf
    • http://flashtheleather.com/uploads/1/3/1/3/131383657/sumujiperixow-durulatife-ripiguv-kiwidoxa.pdf
    • https://gokidomaj.files.wordpress.com/2020/05/98041730844.pdf
    • https://tivujoz.files.wordpress.com/2020/05/27098400728.pdf
    • https://fupalowonega.files.wordpress.com/2020/05/fapuzelexowa.pdf
    • https://kipevofi.files.wordpress.com/2020/05/tobafukonitefixasavope.pdf
    • https://jidinetobix.files.wordpress.com/2020/05/vigepupukuwudorudirelut.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
stream_002_off00006f9e.bin
ed14a276ef100ba3bc56bce2cfd6114f00de00d00085808baaf7b4d6c2a3a541		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6F9E 16472 bytes
font_01_sfnt_off00009d0b.bin
4a6573602e06ba4c858176bab60026920611b5223eda382a4abe7999f2989517		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0B 9176 bytes

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