Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ef0de01e1b941c…

MALICIOUS

PDF

97.8 KB Created: 2021-08-02 00:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: d552e635d9b7e9cc2647371f620184b9 SHA-1: 3c03a47fd6a7d89fe42c52e4635a5f3871f7cf81 SHA-256: 45ef0de01e1b941c57dd9756edda89b55170fd1723c29efd049e2ed434311183
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. The primary purpose appears to be redirecting users to potentially malicious content or phishing pages, leveraging SEO techniques to distribute these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609dbbd6f35d3---98538854050.pdf In PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee34ac6ab90---jelofipelasukisubeji.pdfIn PDF document text
    • http://kutscher-customs.de/gfx/userfiles/files/pafejefo.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f41666ab1d---27678273386.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/2cl6s7huc1av4hfnfnsf6k1dh4/4092043327.pdfIn PDF document text
    • https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/91579316398.pdfIn PDF document text
    • https://miaousland.fr/ckfinder/userfiles/files/jofizujutawotedut.pdfIn PDF document text
    • http://fletcherfamilyreunion.org/clients/52745/File/pevopeziburesavix.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/b1f0683a2d0ee982fccba1e4f8910141/68492850737.pdfIn PDF document text
    • https://hanomanberjaya.com/contents//files/fakej.pdfIn PDF document text
    • https://gazelletr.com/userfiles/files/13480782542.pdfIn PDF document text
    • http://dchs1961.com/clients/871949/File/57641031275.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072e7ae4cc96---wivojesibo.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/7c2f132892c9f74660145c1f1bf3e275/gejefilumavowatogadobix.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866431dae3b---72083070934.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d39568e9181---fibuvavu.pdfIn PDF document text
    • http://industrialdevices.in/uploads/83434675887.pdfIn PDF document text
    • http://centrostudiapulia.it/files/files/72415531914.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021071601031348.pdfIn PDF document text
    • http://runbo.net/upfiles/files/16257389084194.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/087dba6d45051446401211a5103abb4c/40109590109.pdfIn PDF document text
    • https://almuhja.ps/ckfinder/userfiles/files/73234383261.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=minecraft+pe+0.16.0+apk+free+download+softonicPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11802 16992 bytes
SHA-256: f7903ac5ae6a32ed5cd57e4d026bdea01fb3319c6d755feffcaa62e3505bb86f
font_01_sfnt_off0001445f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1445F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C76 11192 bytes
SHA-256: e7a99afa4ba2109638901e26f6cea040e961a03c8a7aac5408bb43418afe45d3

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