Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35e394f90749695…

MALICIOUS

PDF

104.9 KB Created: 2021-07-02 23:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3da60c836e41058b1a3c417b95dadf4e SHA-1: d51c1f668512e43a130788526452182d737b18de SHA-256: e35e394f907496955c307afa24a0d0b2c2d735032f3aa201fdf39c7cf7c21a9c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm with numerous URLs, many hosted on compromised CMS uploads or disposable domains, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9773

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 http://eko-inwest.eu/upload/file/juretepa.pdf
    • http://richfield1962.com/clients/4/47/47516dc9824f3897220912ef171c404f/File/61950301808.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/44f35afdca78b3803bc6f0949471a8ed/67556888976.pdf
    • http://bajajsports.com/userfiles/file/30490864519.pdf
    • https://avigailpekelman.com/sites/default/files/file/pulijikezizoruxi.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606efaff40efc---wefamavutegeb.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdaab0ac05c---65217967564.pdf
    • https://securitegenerale.tn/userfiles/file/tuxedikasezoxelitukona.pdf
    • http://centralgiving.com/media/userfiles/file/33776380134.pdf
    • https://itracmediav5.com/ckfinder/userfiles/files/boxazajamagepofulizusif.pdf
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/ff8eed89730d447d0d112650525fd1fb/tudosita.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606c972d95635---46108756243.pdf
    • https://arichaindia.com/userfiles/file/wojefaruz.pdf
    • https://wipaphun.com/UserFiles/File/jozisajodi.pdf
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607c425f0fd08---revaxuvoveratazidafazi.pdf
    • http://wecans.net/_UploadFile/Images/file/54390647195.pdf
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/738f7634b0ae2248a402f111e4740f70/jexuliri.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160716402b0731---nivolixit.pdf
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/a58c2ec805e724d8fa634376d091c7f5/lomalu.pdf
    • http://lyzjkgm.com/d/files/vidizubotatimusajiretuwo.pdf
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f61c597d48---modemevamipiverem.pdf
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f681643986---padijapivaxenu.pdf
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/a5f45d8b7eb8c564c1e0a0a5e2e51aad/67347496140.pdf
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/d610a0c1f6c07d3db4319ca08ad3c35b/zipotunexadeguzodev.pdf
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160957edc87613---vonurukigenaforutuvuton.pdf
    • https://lederstuhlshop.de/ckfinder/userfiles/files/33898141166.pdf
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160bb8456b876c---30630402979.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=disaster+relief+loan+forgiveness
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013844.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13844 16792 bytes
font_01_sfnt_off0001505b.bin
bb3f704dd103d646a08ec9eeed8dccbc5e9fe408af02868dffb34f363b9ebd98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1505B 10456 bytes
font_02_sfnt_off0001683c.bin
92775121d906e420174c02e10fc32f6b4eeb74c5d7f83fa5ade60b5b0f05b1e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1683C 17608 bytes

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