Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18e4ee7708e4e35…

MALICIOUS

PDF

69.3 KB Created: 2021-09-30 10:09:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 50ebeb18e5d2dde9b6ae05ef17a1a3b1 SHA-1: ebfc2d0d904eb260ef7af8d3d587741128aaff7e SHA-256: e18e4ee7708e4e3584eae417afb6cbc4608aa132d2cf697c951d2ab9edf76d7c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable links. The heuristics indicate it's designed to lead users to external sites, likely for credential harvesting or malware distribution. The presence of numerous URLs hosted on compromised WordPress sites further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://smidgel.ru/uplcv?utm_term=friends+with+benefits+full+movie+123movies PDF link annotation
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137d0fc2f5a7---42540436312.pdfIn PDF document text
    • http://tgroupsrl.com/userfiles/files/fawuxozemojamusorewa.pdfIn PDF document text
    • https://ms2gacor.com/contents/files/90669447163.pdfIn PDF document text
    • http://thaiurethane.com/userfiles/file/64331725483.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161403fed781ca---bunufifopon.pdfIn PDF document text
    • https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/gafibi.pdfIn PDF document text
    • https://tepihtrava.rs/files/fufutekutugiwopuk.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210921021424.pdfIn PDF document text
    • http://dreamwith.gni.kr/ckupload/files/1874859839.pdfIn PDF document text
    • http://domainecomps.com/documents/files/bipuk.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/sisixizoxexabusede.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153d0948f095---fipitotipabipokumimole.pdfIn PDF document text
    • http://jagdrevier.hu/upload/images/file/linuvekadote.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/xepokowisibenedofoneweb.pdfIn PDF document text
    • http://matemotors.com/userfiles/file/43718221342.pdfIn PDF document text
    • https://cebrigantina.com/025-CEB/images-editor/file/kejugilipuwon.pdfIn PDF document text
    • http://salamino.pl/userfiles/file/jajakix.pdfIn PDF document text
    • http://abwvictory.com/uploads/files/bubupi.pdfIn PDF document text
    • http://pumarecovery.com/userfiles/files/16519260024.pdfIn PDF document text
    • http://turningpointdigital.com/cote_dor_import/admin/ckfinder/userfiles/files/74019372286.pdfIn PDF document text
    • http://savages.lu/imagesRTE/files/zafogitewa.pdfIn PDF document text
    • http://chetaomaynganhnhua.com/uploads/files/42281744086.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_off0000b003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB003 11172 bytes
SHA-256: 001fabf954f25bab07188206bc0ebe18bb760afcee8037b751f1ccd75edcddac
font_01_sfnt_off0000ca0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0C 14088 bytes
SHA-256: 0088e41a89449f7e3e4f32382fa7abc08cff9a0a5cc70d32d64c87a3a709ca28
font_02_sfnt_off0000ed00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED00 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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