Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c12f2f8ba3bd65…

MALICIOUS

PDF

80.7 KB Created: 2021-06-28 17:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 064b9bb6e873fb6d1c8af41469e6556c SHA-1: 1f4ac357619a36541d949262762487c12450b09d SHA-256: 03c12f2f8ba3bd6592747c51a5534dcf376084222aa6dd69dd266391c2e42492
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous links pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves directing users to potentially compromised websites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://yournew.site/wp-content/plugins/super-forms/uploads/php/files/0ldu7cjrreltaq7dugdkukdhld/70945672564.pdf In PDF document text
    • http://bielwod.com/userfiles/file/nifejekagilumojavajozarop.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/39023144112.pdfIn PDF document text
    • http://magendans.com/imagefiles/file/54499328409.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607a75e012fb2---tawekesujalasep.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/90540768b3fd4f43ab6540d1f59bf05b/wusajupi.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e36766b62---15804238505.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c7a0e6d5154---83029815158.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607fcefd3bb92---99984818477.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/22a31fe2c890b5d4ad32b43dd9a7fb74/22071435111.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/2bas7us9ttnp71te5a9h020uqk/98488200796.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/048fe34bfc36271f3d06e975b49a362b/wawenamopokeril.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160986be38c714---59725711822.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/j13u7gs48i1nup395tp55pkhdr/juzabazidif.pdfIn PDF document text
    • http://jfac.kr/ckfinder/userfiles/files/xurekepipebunum.pdfIn PDF document text
    • https://home-consult.lu/userfiles/files/8876696529.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/88e057a3dcb51ec6f502782f873fc023/surafifasafivuf.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/44225366875.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad5c54875a3---71219000108.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a18788c711f---44669344054.pdfIn PDF document text
    • http://sgrappresentanze.eu/userfiles/files/xumepunowuki.pdfIn PDF document text
    • http://jhferry.com/data/fckeditor/file///40454917794.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/a5ca1d2f37c8421de39b80923f4008c7/7829554847.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/e0dd154a78f85b41f440487f68ccfe03/24128188015.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/2021060408312461533.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160843d5d5008a---66952422551.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=electricity+generated+from+falling+waterPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/6833917b3454d0e3849783bce51472cc/kofosisa.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_off0000d880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD880 16916 bytes
SHA-256: e8e8505973af784eb24f5c1c5666fd440084760fc72f972df17ddea98c27ab44
font_01_sfnt_off00010426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10426 10836 bytes
SHA-256: ba823c91bc650cd04ffac1011c460927e33d2f9bec64c8ff7119147e7b446b2b
font_02_sfnt_off00011cff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CFF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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