Malicious PDF — malware analysis report

Static analysis result for SHA-256 30af032b22e6998f…

MALICIOUS

PDF

88.7 KB Created: 2021-09-18 09:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 936aa4df340e7045c651fd9ba9db57a4 SHA-1: 64b891137279c2b63ce0547faec17acae56b8dbb SHA-256: 30af032b22e6998fd55654dc38043632f5fb88a6c2f21c2f691c63fc7bf6812c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised websites or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The presence of multiple PDF link farm heuristics further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://queure.ru/uplcv?utm_term=english+romantic+novels+free+download PDF link annotation
    • http://gestaocipa.com/public_html/Imagens/file/95343848588.pdfIn PDF document text
    • http://inbeeldt.nl/userfiles/file/nokunakadej.pdfIn PDF document text
    • https://corianderedmonton.com/ckfinder/userfiles/files/5550327508.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/munetujixudutesuzilatis.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/dosexamokuzavisim.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144a7998b225.pdfIn PDF document text
    • http://thaicockstar.com/ckfinder/userfiles/files/juseteduwexolu.pdfIn PDF document text
    • http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/mopiwo.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/pukudatalokubafuj.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16142f7e6d630c---51902382515.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/sixazanefakul.pdfIn PDF document text
    • http://manhchenang.vn/webroot/img/files/mixit.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/boa5756kra1t5pb31vo3dptqaj/kewefulajoloxosagogon.pdfIn PDF document text
    • https://mimpishio1bet.net/contents/files/tuxul.pdfIn PDF document text
    • https://huaienclinic.com/uploadpic/files/vebadotigigarulumaxab.pdfIn PDF document text
    • http://tz5168.com/uploadfile/image/2021/09/01/file/20210901_210803_183.pdfIn PDF document text
    • https://mimpishio1bet.com/contents/files/povuwudalatazakofo.pdfIn PDF document text
    • http://filipdegreef.be/uploads/files/lewujikagoxasuxafufexot.pdfIn PDF document text
    • http://banner-ever.com/ckImg/files/16154671896.pdfIn PDF document text
    • https://comptables-publics.fr/userfiles/file/piritomafazugubi.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613662534a8fc---figotu.pdfIn PDF document text
    • http://artgrafika.cz/userfiles/file/56509581952.pdfIn PDF document text
    • http://agriturismolionsfarm.it/userfiles/files/51236405347.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/mekuzige.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/q8qgigb6ejmbm48m9qf943k001/94306592982.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001059e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059E 21152 bytes
SHA-256: d57d36cb1122abf1d4004cec341482ec44f2044cc9d8a49b4d407e3e88849621
font_02_sfnt_off00013be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BE5 11060 bytes
SHA-256: 475c04485f7b3c4524a1425e762eca8d4ccbe509fdf4735d10fcf57d6ea77994

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