Malicious PDF — malware analysis report

Static analysis result for SHA-256 3324842978710e14…

MALICIOUS

PDF

73.7 KB Created: 2021-06-15 11:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8d4e8aa5f7cffb55839df409d5384387 SHA-1: 4eac65147c1f6343ef14a5907505d5d19fcb9f5e SHA-256: 3324842978710e14d2e2865039c40f8de881854534144bd02312ac884ce33265
156 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed for phishing or malware distribution. The presence of 'utm_term=cracked parkour servers' in one URL indicates a lure to attract users interested in pirated software. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or serving a malicious payload.

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://crysiq.ru/uplcv?utm_term=cracked+parkour+servers PDF link annotation
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a35940ea1a---55670292562.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160855636c84dd---7353165914.pdfIn PDF document text
    • http://ck-tct.ru/userfiles/file/tofomeliwugizuvizodit.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c46a99ce959---nekulogokowenik.pdfIn PDF document text
    • http://ithalattagarantibelgesi.com/resimlerfiles/jatogokozepi.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b44ffd94567---55273698738.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-5-23/20210523151719668553.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/365273bbab25bfd8252ad4ecbe8515b2/37494437526.pdfIn PDF document text
    • https://rezgame.com/calisma2/files/uploads/gitenexibepepunet.pdfIn PDF document text
    • http://blissrenewbeauty.com/newerac2c/userfiles/file/7278374254.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/01343b3393581eeea21f22086d8ce446/47722379054.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/44927187639.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/74nbksltkqdlmcjuhpurj4k01u/59951612526.pdfIn PDF document text
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/javixevabenunejej.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/ks40221kbv2ntk5uqgn39aivj1/zarapovob.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/f80ee58bf1909bafd6881bae013dae89/90852524123.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/a7db320517b04b71322967f14530adbe/18423673023.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/37e7b907f05921a14165cf9ff8cde5e1/37731555207.pdfIn PDF document text
    • http://pettwayfamilyreunion.com/clients/39389/File/23083134192.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE292 5064 bytes
SHA-256: 506f21aadb0dfff3672f6ddba41b40e4aac88b8205b073a153026fec85b7a956
font_01_sfnt_off0000f3db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DB 11324 bytes
SHA-256: 5c409ce2e8b7e8745012a29f78aaf57f550412aa737c731b6e3ac48875354f20