Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dad82c55cd620ba…

MALICIOUS

PDF

78.0 KB Created: 2021-06-09 17:35:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 9224af9f070ac960da41e5caedb991c6 SHA-1: 97621bc7a7cbb9cbe6ed0194a35d95ac3bae3090 SHA-256: 7dad82c55cd620ba9992513da83f689eb7aba4407377a506081841af969d610b
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. One prominent URL, 'https://smidgel.ru/uplcv?utm_term=fast+and+furious+10+full+movie', impersonates a movie download, likely serving as a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://smidgel.ru/uplcv?utm_term=fast+and+furious+10+full+movie PDF link annotation
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/baxevulafir.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f97ca421d8---14028429994.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16084206ee4e09---34283133661.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/47096958877.pdfIn PDF document text
    • http://irinaburmistrova.ru/files/19971996859.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160afc355be594---70636235277.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/vopux.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-5-2/20210502172319793864.pdfIn PDF document text
    • https://amatnieks.lv/pictures/image/35204772810.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/ac06372cfd175e57e84b718647f78617/13684591584.pdfIn PDF document text
    • https://alrukn.co/userfiles/files/7598283397.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile/%5C/2021050102275872.pdfIn PDF document text
    • https://ms01bet.net/contents//files/gowuzepamidu.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bcd70cdb35d---9683890311.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3655e3caf---62767426708.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/abc749833735b6dd2772d1a093dc4ce8/20967332999.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_off0000f191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF191 5264 bytes
SHA-256: c2fecb64284d065e26773f3176cab397ea1f8d0912785b4f8b8f81bca4e28491
font_01_sfnt_off00010368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10368 11156 bytes
SHA-256: dfefe33ed9423e0d36e2a48437879b9730522fee37af5a5d4b9b026102591e58

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