Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2cc5087e2cf5f32…

MALICIOUS

PDF

75.2 KB Created: 2021-07-10 05:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 4d04aaef54398770d1f51a6359b5ec5f SHA-1: b710decb3956cef285fd823d6b7af8952ba37972 SHA-256: e2cc5087e2cf5f32d02efe9d6580d9208519b8a57b8c8e0d81c07de9c10070ed
156 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and links to websites, some of which are hosted on compromised WordPress installations, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://crewmak.ru/uplcv?utm_term=h2co+electron+pair+geometry PDF link annotation
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ed56a12d3---22102353654.pdfIn PDF document text
    • http://www.pics4us.de/userfiles/file/fojusumumezivinuz.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/sawotizumite.pdfIn PDF document text
    • http://tutek.eu/userfiles/file/41696824014.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/nin624n0kp22g732312cgbc00h/xewukujafazufidok.pdfIn PDF document text
    • http://svazekobciorlice.cz/userfiles/file/14797596822.pdfIn PDF document text
    • http://mynigaoe.com/upload/file/20210615163112.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160905601a7daf---97800394163.pdfIn PDF document text
    • https://lecapsuledigian.it/file/ditutavawutugideriwofodo.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608594ba8b97c---55910528631.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/96168688773.pdfIn PDF document text
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/j7to1og6i3stuo88t6klbq7scb/93496226236.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c132eb9df6---tesoze.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce5997aceb---lefulew.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093eaac0b72a---74213000879.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/mni8r12eu1d6iicu7ctf4fg736/89260489506.pdfIn PDF document text
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/51104455914.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/83829524287.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af74f8ea8d---61636010667.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/563e2d56b2ede8638e897cda7ecbb764/fevevuxov.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/82637342959.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/f4beabf3f160dd8211daf81a476114d1/jumigedigagafalaxoxem.pdfIn PDF document text
    • https://motacademy.it/file/72676174376.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_off0000c4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BD 16352 bytes
SHA-256: d99ced235fcdb465f46408df5e0338a4e9c1ce8bfc73d5e4e4e37501a2249cbe
font_01_sfnt_off0000ef03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF03 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001071a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071A 10772 bytes
SHA-256: 6455bc587c40a1f30512d12cbe47a8df64d4d8d8cf0867d16912f4293ed55c3e

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