Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7b320e202e118e…

MALICIOUS

PDF

101.8 KB Created: 2021-08-04 05:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6119ff42448c24954d918a8f23bb218a SHA-1: bd773de2f224bcf03e7de8d96a75d8418ed3211d SHA-256: 7c7b320e202e118e88d417901db6b391ae4c60d54eda967b4c6c3a362eb8481b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for malicious content. The presence of external URIs and link farms suggests an attempt to redirect users to malicious sites, potentially for phishing or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9858

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b19edc266ac---15318888147.pdf In PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/mkuaq2i152s12tb8nnbf3f07p0/rifuwulefetewad.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160925b5121a22---87790340452.pdfIn PDF document text
    • https://selispin.com/calisma2/files/uploads/85267774544.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/12498134153.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160756b497d9ba---55666280224.pdfIn PDF document text
    • http://wu-pao.com/upfiles/editor/files/nenopivafasenimazilir.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/72997653221.pdfIn PDF document text
    • http://perksys.com/userfiles/file/62912972322.pdfIn PDF document text
    • http://technocom.pl/editor/file/ripitedevotavajajuzu.pdfIn PDF document text
    • http://cnpair.com/userfiles/file/muwawetoxo.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160abf741577bc---73051009014.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/65255353462.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/8pr0fho1mugu6snvugruogrpk0/96002942590.pdfIn PDF document text
    • http://wonsakai.com/uploads/files/48476045682.pdfIn PDF document text
    • http://abroadster.com/files/8515708905.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/b3grinhk7furhqjm15007r5962/sulunesizim.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/vunidezizimera.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608e7a08e708e---27485993975.pdfIn PDF document text
    • http://sushikyototogo.com/uploads/files/laxaxujematabaxutosoj.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/16076e71da8d66---xexon.pdfIn PDF document text
    • https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/22472383282.pdfIn PDF document text
    • https://kalyna.ua/sites/default/files/userfiles/file/vokerujed.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/998cc94058f7aa9b758d66bfd6eff3ce/1567532449.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160f67d2b51319---nalazeloxupowiguwumu.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/3d5e236db15c114df8e78256cf75db14/22011522136.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=genetically+modified+crops+accepting+the+inevitable+ielts+reading+answersPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000136c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136C5 1668 bytes
SHA-256: 0a4af374cb035e676210909e4790276a619635896d879aefac6ffd5912e9aefa
font_02_sfnt_off00013eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB5 17568 bytes
SHA-256: 353b9ccc1c07f2ba39da5fb2c2e5ef9ff4924d4527ec6e656acf998e6ddbf7ae
font_03_sfnt_off00016cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CBD 11512 bytes
SHA-256: de312b2d66f9d6c306ec9fe1ebcf9d6b47918253d9237bc9f6e205cbe5251bca

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