Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d1bdd9ad27f20f…

MALICIOUS

PDF

84.3 KB Created: 2021-09-15 17:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4f157bad9c21ae86604f075f525bd26b SHA-1: 7576d2029d48765371d1cd19e8d36082dbcadff3 SHA-256: 60d1bdd9ad27f20f6e7df99774a46fe15dad25f49d95e2379e811fe8ec47e0dc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious. It contains a link farm pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution attempt. The presence of external URIs and a link farm indicates an attempt to redirect users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://cructi.ru/uplcv?utm_term=download+x+plane+10+for+android PDF link annotation
    • https://perfectprojects.ro/userfiles/file/lorojevarugoxaril.pdfIn PDF document text
    • http://iact2001.com/userData/board/file/tulukumil.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161411b5ba7a4d---59661247281.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/161417a2dcad09---12749791313.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/2b8349a0ec79a0ebee032ac988ed4fca/vodinawexegejevezere.pdfIn PDF document text
    • http://agriturismolataggiasca.eu/userfiles/files/jabazalilexijujusipaxaw.pdfIn PDF document text
    • https://vibangnhadat.com/uploads/files/mimuzirasapavi.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/d6582c577bca37dde275e047df59b805/xilezapowaxeso.pdfIn PDF document text
    • http://bon-mar.com/fck_user_files/file/gadomimedeboraz.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/161370c217676c---mexagidefo.pdfIn PDF document text
    • http://porpora.eu/imagenes/imagenes_contenidos///nebujefas.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/tujetebaguz.pdfIn PDF document text
    • http://antoniolescio.net/userfiles/files/70046515508.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16135f6a6c4c5f---numiparelugasilibirewuder.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/39128097683.pdfIn PDF document text
    • http://sakuragiramenandsushi.com/uploads/files/xaleforeti.pdfIn PDF document text
    • https://melnikhouse.com/userfiles/file/nepobebizir.pdfIn PDF document text
    • https://holyfamilyhospitals.com/ckfinder/userfiles/files/32100532544.pdfIn PDF document text
    • http://tofuyatogo.com/uploads/files/20230441476.pdfIn PDF document text
    • http://schodylux.pl/userfiles/file/42806066400.pdfIn PDF document text
    • http://asesoriazabalburu.org/azaba/files/file/22509226716.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_off0000e4d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE6 17696 bytes
SHA-256: 338be981b36f9bcd244a7cc0d2f289cc21b792bbc59bfa7cd8611e35b8422700
font_02_sfnt_off00012b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B47 10588 bytes
SHA-256: 440998718023094fd4a516cb723e9fe0b805f0c13d2c947e91d071d6d4f982c0