Malicious PDF — malware analysis report

Static analysis result for SHA-256 a45ac28b590bafcc…

MALICIOUS

PDF

93.3 KB Created: 2021-06-26 19:37:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 46c3584614a6f8b0bad039c2c152fe7d SHA-1: 59b90733d0c77caaf2269a07addbe2f7cdd1636a SHA-256: a45ac28b590bafccaf3108f3c6bdf84f7a4d2ced8194592c39925b7f7d08228c
204 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing lure, specifically using a remote support tool pretext to trick users into downloading a malicious file. The ML classifier and ClamAV detection strongly indicate malicious intent. The document contains numerous links to potentially compromised websites, suggesting an attempt to host or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://annandale1963.com/clients/69704/File/radalifuri.pdf In PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/16073467fbd0ab---vedirugewanag.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/lcpm1i6t1e75044pk7plffop3b/67033666964.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160929ae3d60b4---felitafux.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/xadegimobepuv.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/f467f8ba93e0953b67d0ca014a98aa54/lajawofisorelivirizev.pdfIn PDF document text
    • http://canvangdientu.com/images/file/64096702141.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160700c02baba1---50281657156.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/63556049659.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/8338c6cf2d4c326079f46c2026204bcd/gikerusiwavebudawev.pdfIn PDF document text
    • https://aonetreks.com/uploads/file/xajegaw.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/vigegupiwifi.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/bf60d52c9d8aa1183c9dd9ea2f0b443f/89450516890.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/h0to9ugitfgpu17hmo8ah85g17/gomonitupakirugatamodi.pdfIn PDF document text
    • https://chiuman-hk.com/images/file/48418775411.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943cca4bdc4---78635495054.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/0c8a20cc85fd8aa65dfcb448f8e4979d/mupipi.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/tra8uib7r6qh1uj2j0s0mt3vjf/supiki.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16088a31ec4846---zefewisiba.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608df6df558ca---baxipedepunob.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16089c109b160d---bajojibimumi.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/c8951603b7e78f2f5af0aa59991c1130/lekidobodexo.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb0e08b1fe---fasikizefixifibasamiw.pdfIn PDF document text
    • https://actor-conseil.com/files/file/wasibukakoxerijitutezu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=best+vnc+viewer+androidPDF 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_off00010b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12320 10520 bytes
SHA-256: f42867c4ddf9d77ae0dabb951f0ff94653833ea2556afbc4b25adbdfb50dc61d
font_02_sfnt_off00013b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B53 17516 bytes
SHA-256: 58f35852788870af0f4ffd9dccf92b3eea6b2feba6c51cb214a30a5fb57ded74

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