Malicious PDF — malware analysis report

Static analysis result for SHA-256 63a64052986a1789…

MALICIOUS

PDF

69.5 KB Created: 2021-05-03 00:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6231eab0efd9196b3e167795b1ea56a SHA-1: 7a75e1d707db910f9aa7654367e6c890a9d25594 SHA-256: 63a64052986a1789b8e770d6b791ec345ecdc512403fedc5f53bb04ac0623980
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains numerous embedded links, many of which point to compromised WordPress sites hosting other PDF files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malicious content. The document body's deceptive title suggests a phishing or social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9706

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/962da8df5625f4b5910c9478d97c3f7c/tokedumaxala.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160709e03ec6ac---nusozuponidodexenomiles.pdf
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607087475a50a---35606191411.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160886e4200f3d---90001037348.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160701fe4b4a53---xotupimivaletanimovir.pdf
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/8446d31cd126ec75f69f4a73fec1ab7c/23793852638.pdf
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d137571b95---40888869052.pdf
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/45412564b729ab3dc63ebba5157e57e1/logobarisivokupimuk.pdf
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608636d14c11d---rurosef.pdf
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085ebcda0736---telafarizubagakuvab.pdf
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160848bf7546f4---54749072823.pdf
    • http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/2127b67adfd3ac4fa48b2cac517b694d/81704489545.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=reformas+borbonicas+resumen+facil
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9cc.bin
ba89d2b309c6798c3b55eb730f7f2fb2ecc02cfbf3dc2067f54d58fbafdf0097		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CC 5176 bytes
font_01_sfnt_off0000eb55.bin
e26e5eef486aaa5378f927650c122ed5ee5b1376dd309a995f666dc9e0c9dc6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB55 11584 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.