Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6896bc1fdb932c5…

MALICIOUS

PDF

86.0 KB Created: 2021-09-01 13:23:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c0accd371ebc8f62467d16e6bb6ed5db SHA-1: 62c7251114214f7f71e92515aebeb8363cd16151 SHA-256: b6896bc1fdb932c57490a6b3571826142de5cdf63a225a4d0371d86a10800f0f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which are associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9902

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://crewmak.ru/uplcv?utm_term=issues+we+are+facing+today PDF link annotation
    • http://fence-alarm.com/userfiles/files/90296637496.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/05794a65d6fadb5bbd3e112c4e6f85a7/61602599250.pdfIn PDF document text
    • http://colorfulmedia.de/fotki/fotki/file/dasekusokuzoxem.pdfIn PDF document text
    • http://paulabenveniste.com/UserFiles/file/22861170889.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/51037047615.pdfIn PDF document text
    • http://razaviota.ir/basefile/razaviotair/files/88082874568.pdfIn PDF document text
    • http://jinshi66.com/uploadfiles/files/pozor.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16083256e19dde---79759839922.pdfIn PDF document text
    • http://446888.top/userfiles/file/32352395935.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/finukik.pdfIn PDF document text
    • http://score1forspencer.com/clients/4/45/4587145e2679cb7673d0e21b436e5c25/File/fopatuva.pdfIn PDF document text
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee4e05606e---3725894740.pdfIn PDF document text
    • https://sjalikave.hu/pictures/file/49255488247.pdfIn PDF document text
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/minipopobamosapogiledapo.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/4cadc5003fd7fa761fe0236e7c8b132c/kitag.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070bed49225a---didevesaxijofoberi.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608beebe7a9a1---vuwaguvusesaba.pdfIn PDF document text
    • http://unipsyclinic.com/userfiles/file/20210525073655.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/27933857098.pdfIn PDF document text
    • http://adirondackseafood.com/ckfinder/userfiles/files/xofavas.pdfIn PDF document text
    • http://cukiernia-waltar.pl/qcms/userfiles/file/rupomidawelurabudaziz.pdfIn PDF document text
    • http://erdbau-rauch.at/zamufaxixililiwas.pdfIn PDF document text
    • http://rmgoals.com/userfiles/files/64579447448.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/a892cf2060037e7e5407b4c5a580a2fa/91661067526.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/vulipiruxixexutiruwowipa.pdfIn PDF document text
    • http://scbczy.cn/up_files/file/20210629_214908.pdfIn PDF document text
    • http://walkandwagforveterans.com/clients/9/96/96cc06f6b2a5429c1325f0b535cddba6/File/58270881627.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/feb47121f11e0d2d92d892e8b4cdd2bd/54323193098.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_off0000eb58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB58 17148 bytes
SHA-256: a8cefcceb63c2457ec4264cded974ea7ae262cb170d05269ee11e96455fd509e
font_01_sfnt_off00011795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11795 10856 bytes
SHA-256: 9dcee2b79841e7de7ac6a22a76addb780d75a0bc2f03132cb3b3f1f7272c4b54
font_02_sfnt_off000130b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130B2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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