Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9156dab3f080624…

MALICIOUS

PDF

74.8 KB Created: 2021-06-12 14:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab75f074ba30f3197874c64185719ecf SHA-1: c9cf55c56737a029aeded2b622fc931c535e5fad SHA-256: e9156dab3f08062433b455c14bdf1b2861eb9560bea7d52200bd267c6eb27750
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to compromised websites, likely serving as a link farm for phishing or malware distribution. The presence of these links and the overall structure suggest an attempt to redirect users to malicious content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pixomot.ru/uplcv?utm_term=history+book+of+class+8+icse
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ef2ad05b0---bajelexuwipekus.pdf
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/fo9o0e7q1jjds93p1qouhitd90/70029868439.pdf
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/9m2ek6gi4c7222iu2n1fl2mfjr/pamagatitoji.pdf
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/r8gppm9mqq8up5uvtjaknhh7vv/52795977920.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/h86cb1pkqcqpjlbm53v2h5ume5/xaluwotejopuworozon.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e18bad70c---98650120350.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a353ad04f79---65663984044.pdf
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/3qu8sfbrjro4cbr719rtr4kqtl/fumezebalud.pdf
    • http://weifong.tw/fckimages/file/likukamibanaxategabener.pdf
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16079b59336048---xubawojibo.pdf
    • https://ludifrance.fr/userfiles/file/28055067911.pdf
    • http://yuha.be/_files/file/9839214067.pdf
    • http://jedwines.com/cmsCart//upload/file/84174936643.pdf
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc09457c0d5---jawitexajowoxatulijomel.pdf
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b181554127---witujalefumixuzirivit.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a961a548918---12130071543.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e799.bin
d7612628e08789b2f366e398f2f0200482e6e535919cea2f3f4617241ae3744c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE799 5336 bytes
font_01_sfnt_off0000f9db.bin
a380b35e5df96174f86ad64d8bed50dd536565adcf7e0cca7db00f33091ba26e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DB 10972 bytes

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