Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbd94f4cbb1c5ea4…

MALICIOUS

PDF

84.6 KB Created: 2021-09-18 22:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: bf6b5592c8e36f6eccb8a1ce55f484ed SHA-1: e1e8bd2f191d2524771425a81a6e6e3ed1c8aa0f SHA-256: bbd94f4cbb1c5ea4cd5f846fd108477c322d1dc46f353f43fcca955d4fc4cc3c
164 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, indicated by the presence of a visual download button and numerous external links. Several URLs point to compromised CMS uploads or disposable hosting, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to exploiting vulnerabilities or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • 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 https://pixomot.ru/uplcv?utm_term=deezer+premium+apk+mod+download PDF link annotation
    • http://vector-food.com/userfiles/file/53066528343.pdfIn PDF document text
    • https://12tiga.com/contents/files/49510759740.pdfIn PDF document text
    • https://polandpools.com/contents/files/bijinibiwesijivuvaviwe.pdfIn PDF document text
    • http://hasadtemizlik.com/upload/file/21485672922.pdfIn PDF document text
    • http://status-go.net/gfx/userfiles/files/gamijowosamofivisupex.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ef53de14f2fe1b516d142a40c7622367/jivodakolixup.pdfIn PDF document text
    • https://apartmani-mestrovic-krk.hr/files/pafobedozubudikigebabik.pdfIn PDF document text
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/jipexedab.pdfIn PDF document text
    • http://bapassamarinda.id/assets/ckfinder/core/connector/php/uploads/files/32049042294.pdfIn PDF document text
    • http://getsolarny.com/userfiles/file/likatowugusifozunawuzikaw.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614025f922a43---kugajez.pdfIn PDF document text
    • https://epgeptech.hu/ckfinder/userfiles/files/fukifinuvemupuxu.pdfIn PDF document text
    • https://hargagila.com/uploads/image/files/bixopejasosexolevil.pdfIn PDF document text
    • http://cana.vn/uploads/userfiles/file/46621364911.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141a21c84be5---wuxow.pdfIn PDF document text
    • https://kirbas.com/img/uploaded/file/sazitof.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe9c0610c5---6400517450.pdfIn PDF document text
    • http://devison-matras.com/upload/file/15793983613.pdfIn PDF document text
    • http://konditsionery-reutov.ru/upload_picture/file/sunaxezututuxod.pdfIn PDF document text
    • http://industrialsupplies.pk/userfiles/files/92860288801.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/86230952503.pdfIn PDF document text
    • https://dm288.rs/slicice/file/xuniritararemiwa.pdfIn PDF document text
    • https://a-guskov.ru/uploads/files/49458842332.pdfIn PDF document text
    • http://www.integra-cr.cz/administrace/ckfinder/userfiles/files/degunoxalenifixesu.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_off0000e4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B7 10624 bytes
SHA-256: ee8648d4e1798ac3718f70f87e54199c7817ee2d0fc93cc26825da2947f0c73c
font_01_sfnt_off0000fcfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFD 18424 bytes
SHA-256: 412d383dd665624c9995840595ffe05e0f7086a3231a887b7eaf1292e7702ad0
font_02_sfnt_off00012c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C88 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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