Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abd59656be87c3c…

MALICIOUS

PDF

82.1 KB Created: 2021-09-04 17:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 53d537f26f1467ed79cdb458b6e1c2b2 SHA-1: 0ce522e06f19714ca41098984074b6cb78031061 SHA-256: 0abd59656be87c3c16332220fa3da4130630719fbffe636338917843e0093aff
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. The file contains numerous links pointing to compromised websites, many of which are hosted on disposable domains or use URL farms, indicating a likely phishing or malware distribution scheme. The presence of external URIs and link farms suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://archism.ru/uplcv?utm_term=novel+senjakala+pdf PDF link annotation
    • http://mobilesamara.com/img/files/file/numomafek.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/73466035009.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/320c0ad74027d4b54c985b27b7ef4563/zepab.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/382a9ea8dda4e330822640798cfb8a4a/bubububivi.pdfIn PDF document text
    • http://klpa.net/userData/board/file/woserimudexuzigorajagijug.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743062bb953---53295803363.pdfIn PDF document text
    • http://ronaldtan.nl/images/photo/76129365142.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/39544922353.pdfIn PDF document text
    • https://comtraining.cl/userfiles/files/97409170658.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160ac62059eb1f---42611219578.pdfIn PDF document text
    • http://yao-cheng.com/uploadfiles/20210729063635.pdfIn PDF document text
    • http://35ct1.com/images/ckImageFiles/files/zafogagopogepema.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/u55lgvvvoleq51rndltip0a067/41938182570.pdfIn PDF document text
    • http://nhs1980alumni.com/clients/878257/File/8338490513.pdfIn PDF document text
    • http://yaeram.com/userData/board/file/55547195749.pdfIn PDF document text
    • https://nmg.lv/img/uploads/files/26836321302.pdfIn PDF document text
    • https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/simoselokuvunid.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/161283ade6fd29---2987248536.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c4c929e7b50---33353844323.pdfIn PDF document text
    • http://karpatskiles.ru/store/file/45985290676.pdfIn PDF document text
    • https://garyjetcenter.com/wp-content/plugins/super-forms/uploads/php/files/b97d6d8300187a7e70a82bdd7dd5124b/wupefaf.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085e96f245b3---buvidavagukugeg.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/wipunikiwut.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_off0000d9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9ED 18880 bytes
SHA-256: 3089dfebed2ea489a986aacc424e5bd997e88cbc594267c62b84556ad2011fb9
font_01_sfnt_off00010b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1E 10464 bytes
SHA-256: 4d1985c7459dcb6913f4eac75cc92d00be9d359c72bd762fb468fefffb3988e7
font_02_sfnt_off00012315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12315 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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