Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7ba0d1c5e2ceaa4…

MALICIOUS

PDF

87.8 KB Created: 2021-06-28 02:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f1e6debf7f5ec150ed0475f4638683a9 SHA-1: f05c134fd584c75c33f19fff7dc51a109401398e SHA-256: b7ba0d1c5e2ceaa4b7e709a564485c84470b8afd488421e6276fa016854c9e2b
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links to compromised websites, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms on disposable hosting indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://laborke.ru/uplcv?utm_term=best+enchantments+for+boots PDF link annotation
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/nujiwumutotemoket.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a489ab5e0fd---lifebon.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/zinukekirorewoberar.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a56a63a3ff5---54286613914.pdfIn PDF document text
    • http://bud-drog.pl/userfiles/file/23189270485.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081804ecd337---bupiwekupibarunopafeba.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cd17f3af59a---xekosixinavexaxakagad.pdfIn PDF document text
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/lopabirakorogibezuk.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3918cb21d9---fagumusenasasigenikarewug.pdfIn PDF document text
    • http://voijin.com/userfiles/files/20829236619.pdfIn PDF document text
    • http://sns-russia.ru/userfiles/file/rejutizo.pdfIn PDF document text
    • http://kondicionery-dolgoprudny.ru/upload_picture/file/78255997251.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/83814467785.pdfIn PDF document text
    • http://strandedtattoo.net/file/gebarezejewekore.pdfIn PDF document text
    • http://littlepearlbooks.in/data/eimages/file/72498187750.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/d45b6c7621c6774bffd3634789156029/8846391885.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad4bb7d7d86---14925999312.pdfIn PDF document text
    • http://utuin.net/files/fckeditor/file/42445134801.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9bc7949e80---19276657436.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/f111175e6ed51ae903c63afc5f7eff07/64787418968.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/fe0ibh9fclg23lr8cedbgk4k12/pixavubabatubesi.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/3om4et77gkc0183o16bujvh67e/vejamagodolepo.pdfIn PDF document text
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/43376181783.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/464911cb1c71cd141d19ba3352a50efd/nizobiwonitetopikokit.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_off0000f43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43F 17400 bytes
SHA-256: a88d72dfb7fc4fe64ea2de204385d1e40c25ecdd68eb6c6b298561ce33eeb3cb
font_01_sfnt_off000121aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000139c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139C1 10656 bytes
SHA-256: 124328d86fc0cf4b89ff302b772ae7752d6a42bb159757db8c1e27f91fdeb5a8

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