Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabecc8e3431199a…

MALICIOUS

PDF

80.9 KB Created: 2021-09-21 07:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 875dd0af50d5669d68a14b0fdeac7cd1 SHA-1: 607acebb41d23a2dc40429bf5f68f0a9337163c8 SHA-256: eabecc8e3431199acfd2ded42d674b7c43adcb21ed3b76a20339a4a59a85958a
196 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing or social engineering attack. The document body, though heavily obfuscated, contains embedded URLs and heuristics indicate it functions as a link farm, potentially leading to further malicious content or exploits. The 'SE_CLICKFIX' heuristic specifically points to social engineering tactics designed to bypass security measures by instructing the user to manually execute commands.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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=jezyk+polski+na+androida+download PDF link annotation
    • http://tabletopad.com/images/file/86074010301.pdfIn PDF document text
    • https://alansglobalservices.com/ckfinder/userfiles/files/ziparorenitideweverob.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161330ce2c1c2c---maruzuwufigukotusirejik.pdfIn PDF document text
    • http://hanasushipickup.com/uploads/files/48656297339.pdfIn PDF document text
    • http://acelybio.com/upload/files/pisifozamari.pdfIn PDF document text
    • http://aeklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wezek.pdfIn PDF document text
    • https://coverline.ro/userfiles/file/dojipex.pdfIn PDF document text
    • http://smelawservice.com/file_media/file_image/file/dinikigalaj.pdfIn PDF document text
    • https://marugame.hk/editor_upload/file/kinifus.pdfIn PDF document text
    • https://dananeye.com/uploads/files/202109132109325141.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/kefoxusosedax.pdfIn PDF document text
    • http://abwninemile.com/uploads/files/1890848822.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/tk9q1io8g9giikep3jki0cbgu5/7165082641.pdfIn PDF document text
    • http://hotel-gerard-dalsace.com/upload/document/pokawemomesaxaritarex.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/161315f9f2865e---bavapurefuwamorazuwa.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/48443491392.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16146bb717aa35---pogiteruxexepere.pdfIn PDF document text
    • https://unosms.us/userfiles/file/69876965935.pdfIn PDF document text
    • https://codecs.ro/images/file/ramugejokuv.pdfIn PDF document text
    • http://www.parkwaytransplant.com/media_upload/upload/files/ledumupafofape.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/161348a0eebe85---ratosisoxagazozo.pdfIn PDF document text
    • http://romovi.net/sgi_userfiles/userfiles/files/lozilukuvefusazijil.pdfIn PDF document text
    • http://theorientgarden.iorderfoods.com/uploads/files/jadujidum.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/3b1698f504a6d932bd740d2d7047763b/bepomoxaro.pdfIn PDF document text
    • https://adikmanis.com/contents/files/sapis.pdfIn PDF document text
    • http://www.scea.edu.mn/ckfinder/userfiles/files/65187343412.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_off0000d798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD798 10628 bytes
SHA-256: 612bc4f87e7c71f019c4065fed29c2285f1fc4dc756405d498365398f9eacf3d
font_01_sfnt_off0000f01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01E 17968 bytes
SHA-256: 8f78148c05764d67a0ab8e942ea5e1cefb8094c749437b229ccbc507eaed509b
font_02_sfnt_off00011e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E17 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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