Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e7fcf5ee0d7f36…

MALICIOUS

PDF

80.5 KB Created: 2021-09-14 15:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: a0db5c366e39cd550dcac442cd8080fb SHA-1: 7601be068d16b376034502a2e122405cde7be643 SHA-256: 02e7fcf5ee0d7f3626fbc95b7fdde70a83a97c37a5e8833d8bfaa82b18c87393
156 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. No scripts were extracted, but the overall structure and URL distribution strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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://tomorrowhubs.com/upload/users/files/18140153920.pdf In PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/1f85166aada6da46423edd1c59fa1295/xebejedosabajasigor.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/f8068d39882c24a2414f9e977f9afeff/59377012369.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/7110b462e4453b3786f4ef7dd3b7a097/6256342392.pdfIn PDF document text
    • http://ud2-140.com/files/6001651662.pdfIn PDF document text
    • https://dcimx.com/files/xusefunovazusesosujebepa.pdfIn PDF document text
    • http://erex.hu/upload/file/nivuzuxirizut.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/pi42kjkmj41gm2vnunglqn9me1/rixejatowovo.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16139dc6370c9d---20762598815.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613c4d825f57f---69872125677.pdfIn PDF document text
    • http://aotem.com/data/home/qxu1780220113/htdocs/uploadfile/files/75643463063.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/17399310106.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/4a693ad182fffe3d5e01301586f86bdd/zekoretatazu.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c5d090974d---logarinoxizoz.pdfIn PDF document text
    • http://dioblina.eu/userfiles/file/kuxevitixemamagofi.pdfIn PDF document text
    • http://chapelguild.com/images/usr/9968372342.pdfIn PDF document text
    • https://speedwayinfo.hu/uploads/file/42246962774.pdfIn PDF document text
    • https://zahrek.com/userfiles/file/37296606487.pdfIn PDF document text
    • http://elliptical-trainers.ru/ckfinder/userfiles/files/jesogesinafenopow.pdfIn PDF document text
    • http://art-lan.ru/uploads/assets/file/matojegele.pdfIn PDF document text
    • http://safeabortionnepal.com/userfiles/file/14266790008.pdfIn PDF document text
    • http://jolanyee.com/upload/files/202109021204226529.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f58357913f---wepupuxazaguwotag.pdfIn PDF document text
    • http://closehorses.com/userfiles/file/96492846129.pdfIn PDF document text
    • http://e-junghan.com/userData/board/file/ritepewexufanimaredad.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/161380329aa0da---64946557513.pdfIn PDF document text
    • http://mdbim.pl/ubezpiecz/obrazy/file/gefiwovepute.pdfIn PDF document text
    • http://mcrlclient.gilcom.ro/ckfinder/userfiles/files/44789009775.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=can+android+read+fat32PDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD509 17784 bytes
SHA-256: 8b10d54ca9583e31f0cb91c08ed1c9d0eebe499f2d6177456da978421d19de2f
font_01_sfnt_off000103ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AD 10456 bytes
SHA-256: 6b88f00a07b743194b6aa558142175c6f88ca50c9bb02601ed183166ae37167f
font_02_sfnt_off00011b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1