Malicious PDF — malware analysis report

Static analysis result for SHA-256 7817cf349a77ba40…

MALICIOUS

PDF

123.6 KB Created: 2022-06-12 20:58:38 +02:00 Authoring application: kalzach (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: 5bc33e2f04416e6bb7b8877e06c3a9f0 SHA-1: 24cb94bc2cadd3e51abbf94d2c4a31c5f0721cd5 SHA-256: 7817cf349a77ba40e82d568b26ee67620864ca365883d7c1ac62259bdc8da41c
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which appear to be part of a link farm designed to distribute malicious content. One critical heuristic identified a password-protected archive lure, suggesting the document's primary purpose is to trick users into downloading a password-protected payload. The embedded URL points to a suspicious domain, likely hosting the secondary stage of the attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0203

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/champneys/faqs.forces?cm9ib21vbmdvIGRvd25sb2FkIGZvciB3aW5kb3dzIDcgMzItYml0IGlzbwcm9=joakim/ZG93bmxvYWR8MVdyYm05eVlYeDhNVFkxTkRrNE9URTJNbng4TWpVNE4zeDhLRTBwSUVobGNtOXJkU0JiUm1GemRDQkhSVTVk.slumbering/duodenal.circuitry
    • https://vendredeslivres.com/wp-content/uploads/2022/06/Flubber_Y_El_Profesor_ChifladoDVDRIPSpanishepub.pdf
    • https://cdn.geeb.xyz/upload/files/2022/06/ZitFshr65KcxnZ4MwiGJ_12_8342527fbdd83de1634b83f49ffb2647_file.pdf
    • https://eventouritaly.com/en/keroro-gunso-the-movie-4-download-top/
    • https://csermooc78next.blog/2022/06/13/artsoft-mach3-crackrar-_hot_/
    • http://mysleepanddreams.com/password-pes-13-reloaded-txt-0-03-kb-rar/
    • https://intense-island-16994.herokuapp.com/aleigni.pdf
    • https://ayoikut.com/advert/call-of-duty-1-romanian-language-edition-mod/
    • http://referendum.pl/2022/06/12/subtitle-indonesia-human-vs-zombies/
    • https://quickpro.site/wp-content/uploads/2022/06/Dungeons_And_Dragons_Adventure_Tools_BEST_Crack.pdf
    • https://www.vsv7.com/upload/files/2022/06/EIcvcEXXMSLV3W43EX7o_12_8342527fbdd83de1634b83f49ffb2647_file.pdf
    • https://enricmcatala.com/hisss-2010-movie-free-download-utorrent/
    • https://www.coachingandlife.com/wp-content/uploads/2022/06/Download_Xforce_Keygen_LINK_Fusion_360_2018_Portable.pdf
    • https://www.turksjournal.com/ford-outcode-incode-calculator-crackl/
    • http://freemall.jp/blufftitler-dx9-itv-10-0-serial-key-__link__.html
    • https://ktwins.ru/wp-content/uploads/2022/06/whymani.pdf
    • http://humlog.social/upload/files/2022/06/wBgObTYFnfLU6TR95eUO_12_8342527fbdd83de1634b83f49ffb2647_file.pdf
    • https://togetherwearegrand.com/qurantafseertamilpdffree-updated/
    • https://drblaskovich.com/wp-content/uploads/2022/06/Cckaleidaplugindownload.pdf
    • https://findlocal.online/wp-content/uploads/2022/06/Tonkato_Unusual_Childrens_Books.pdf
    • https://prendimisubito.com/wp-content/uploads/2022/06/Edirol_HQ_Orchestral_Full_Version.pdf
    • 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_002_off00000dc1.bin
a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDC1 120140 bytes