Malicious PDF — malware analysis report

Static analysis result for SHA-256 83cb94bfe36e546b…

MALICIOUS

PDF

126.6 KB Created: 2022-06-10 05:04:47 +02:00 Authoring application: dougell (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: cf20d64aa63c00f1227a5c725bca9160 SHA-1: 51774289d1b45b5d78730eaf73a1bcedabc86f18 SHA-256: 83cb94bfe36e546bfde8ec6260b42b47f295ff1487e423cd9b535f58930a5877
64 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or a distribution point for malicious content. The primary URL, http://evacdir.com/dunlopillo/..., appears to be a lure for downloading files. No scripts were extracted from this sample, and the document body was unreadable, but the extensive link farm strongly indicates a malicious intent to redirect users to external resources.

Machine Learning

  • Nyx PDF Classifier clean score 0.0284

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://evacdir.com/dunlopillo/Q1JBQ0sgRnJlZSBZb3VUdWJlIERvd25sb2FkIDQuMS44MS43MjMgUHJlbWl1bSBGdWxsIFdpdGggTWVkaWNpbmVbQmFidQQ1J.hypertonic/failback/courses&ZG93bmxvYWR8SDhQTmpCcFlueDhNVFkxTkRjNE1EZzNPWHg4TWpVM05IeDhLRTBwSUhKbFlXUXRZbXh2WnlCYlJtRnpkQ0JIUlU1ZA?magazine&packards=shellmaker
    • https://fraenkische-rezepte.com/windows-3-11-dos-boot-cd-hot/
    • https://social.urgclub.com/upload/files/2022/06/iDOSWp6H2Ph5aEzFksLL_10_c742b08cb3025b025cce9eb3b4505c31_file.pdf
    • https://nixxcommerce.com/advert/thesims4v147491020dlcsselectablemulti17anadiusrepack-link/
    • https://footpathschool.org/wp-content/uploads/2022/06/Free_Download_NTSYS_Pc_For_Molecar_Biology_37_UPDATED.pdf
    • http://duhocnewworld.com/wp-content/uploads/2022/06/siobgeor.pdf
    • https://aapanobadi.com/2022/06/10/paragon-go-virtual-1-0-product-key-with-serial/
    • http://jaxskateclub.org/wp-content/uploads/2022/06/Ex4_To_Mq4_Decompiler_4_0_432_Free_download.pdf
    • https://sarfatit.com/wp-content/uploads/2022/06/Teamviewer_1522756_For_Mac_OS.pdf
    • https://ccsbe.org/wp-content/uploads/2022/06/preming.pdf
    • https://inmueblesencolombia.com/?p=29008
    • https://fraenkische-rezepte.com/amok-krystian-bala-pdf-link/
    • http://mysquare.in/?p=13187
    • https://empoweresports.com/wp-content/uploads/2022/06/Summer_Lesson_Trick_for_PC__Gameoicom.pdf
    • https://harringtonsorganic.com/currency-trading/ultimate-sound-bank-plugsound-box-vst-v1-92/
    • https://rodillosciclismo.com/wp-content/uploads/2022/06/amavan.pdf
    • https://innovacioncosmetica.com/advanced-email-extractor-pro-v-2-76-with-serial/
    • https://chichiama.net/?p=39697
    • https://freecricprediction.com/wp-content/uploads/2022/06/Adobe_Audition_CC_2020_v130360_With_Crack_x64_Latest.pdf
    • https://soundcollapse.altervista.org/advert/deep-hiarcs-14-uci-chess-engine-download-link/
    • https://fastdefocounlepoda.wixsite.com/ocordecki/post/carl-jung-an-introduction
    • http://www.tcpdf.org
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00001964.bin
a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1964 120140 bytes