Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b1b8dad1ccd292…

MALICIOUS

PDF

71.2 KB Created: 2021-09-17 01:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 49e977ea392a3632fdee4183a1954b1f SHA-1: 7d68365e96d177079071d8a6816d723bfbdf3b66 SHA-256: 46b1b8dad1ccd292e6717e2ebcc8f43284789e05423e16672c40a7094bc02c70
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains embedded JavaScript, a common technique for executing malicious code within PDFs. The PDF also functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised WordPress sites, increasing the likelihood of phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://bomando.bomsolar.com/uploadfiles/files/lemosoditedunomaxafanowo.pdf In PDF document text
    • https://polytex.de/sites/default/files/42347406554.pdfIn PDF document text
    • https://aarhuskortet.dk/images/file/79600955794.pdfIn PDF document text
    • http://studiomuraca.eu/userfiles/files/30833433578.pdfIn PDF document text
    • http://stcforanebanglore.smcim.com/www/js/ckfinder/userfiles/files/guzoru.pdfIn PDF document text
    • https://mytopics.it/uploads/file/53236152629.pdfIn PDF document text
    • http://galaxyjewel.cn/uploadfile/files/pifasapopevirolutepibapa.pdfIn PDF document text
    • https://hobbes-group.com/upload/files/mapularasenoluwivabe.pdfIn PDF document text
    • http://bresky.cz/res/file/14182102817.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/aa0d97bcd56bc843cb241866863f9394/23938042799.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/sd25nsgaossuh21i1v6q71oc63/49362893134.pdfIn PDF document text
    • http://tysons-cafe.com/uploads/files/gaduzolaxevekaxofuwob.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/161423fbc48368---pudol.pdfIn PDF document text
    • http://xn--b1akwe.xn--p1ai/userfiles/file/86221429249.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16138d813d210d---5747771699.pdfIn PDF document text
    • http://calisnt.com/uploads/files/25366904271.pdfIn PDF document text
    • http://bimbrlata.cz/UserFiles/File/92027568438.pdfIn PDF document text
    • http://giasuthanhdat.vn/Images_upload/files/85229071009.pdfIn PDF document text
    • http://lookkorea.net/userfiles/file/41124481331.pdfIn PDF document text
    • https://kindeeyudee.com/ck_files/files/57098907936.pdfIn PDF document text
    • http://consorzio-csa.it/userfiles/files/zobexefubot.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1fcf65863d4988be379bc8b61fa21514/nokoposuluzazexowobekote.pdfIn PDF document text
    • http://rogersdesignhouse.com/uploads/files/bovetevilapapefilabusovo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=8+ball+pool+long+stickPDF 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_off0000b6cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6CC 10660 bytes
SHA-256: e3e7e60ebc3aa18e774fca1e92e75c251f5e21f63a47cdb404055a33eaaf3bbd
font_01_sfnt_off0000cf1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72E 15864 bytes
SHA-256: 8a1373bb965aa368370c3d18827a98300cb7778441de63520654e3f2924a21a3

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