Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c226aadfd91bec0…

MALICIOUS

PDF

89.6 KB Created: 2021-08-26 13:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 03eaa7d85b32c275cb51b02ecdfbf002 SHA-1: 61aa52b6c89a41d8c5939bff3a84173b1951a579 SHA-256: 2c226aadfd91bec013246fbb3cd6cd538026c327947e06ef16a01b1fef60ac58
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is a phishing or trojan delivery mechanism. The document functions as a link farm, containing numerous URLs pointing to potentially compromised websites and disposable hosting, designed to redirect users to malicious content. The presence of external URIs and link farm heuristics strongly suggests an attempt to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • 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://daisytalavera.com/userfiles/files/90273740887.pdf In PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/78769798220.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160897e6f6cb25---lubak.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/files/14626932573.pdfIn PDF document text
    • http://orderkai.com/uploads/files/20901577212.pdfIn PDF document text
    • http://3dprofi.net/images/uploads/file/tugozatazajemini.pdfIn PDF document text
    • http://tz5168.com/uploadfile/image/2021/05/29/file/20210529_155311_138.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160886c359ab4e---47615009659.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/6d81326dd62a901cfa3cc74a83d04dd0/gunowelabifiregi.pdfIn PDF document text
    • https://abeess.com/userfiles/file/16790444203.pdfIn PDF document text
    • https://camping-du-lac-dijon.com/fichiers/movaf.pdfIn PDF document text
    • http://headlinesdinerla.com/uploads/files/xoxowufobepawotaje.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/a032bb1305f777a843e8ae4fdd13d501/xazusununevuzo.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160837effef858---poniz.pdfIn PDF document text
    • http://rakkhunnursinghome.com/user_img/files/vipafedow.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/keredeje.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160cbc3799e4ff---67749703126.pdfIn PDF document text
    • https://isagrinio.gr/userfiles/fetigavawafesef.pdfIn PDF document text
    • http://parquet-cortes.fr/data/Files/ganiperosawideteximosanez.pdfIn PDF document text
    • http://olgapolyakova.com/files/files/57976954296.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/f8b7228def34fd83df7da0923102b339/14655452373.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=ganbatte+translate+to+indonesiaPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48E 10420 bytes
SHA-256: 803132c83c9e979b77fa45b016383a8096f6871aedd03f620f075aaac59006db
font_01_sfnt_off0000fc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC46 7724 bytes
SHA-256: 62aa374dc5ba4ec5c18a15c28ec56c29167ea06a0f3e97ec4c588bb949b2d8c1
font_02_sfnt_off000116ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116EC 15760 bytes
SHA-256: 39bd6558154db6f5b41562870ef71a860a0cef77f54cb8af8ea5ba8ccdef0b98
font_03_sfnt_off00013f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F67 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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