Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7282ffd0197745d…

MALICIOUS

PDF

87.3 KB Created: 2021-06-28 20:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 62716beb35a2676261c8cb89cb14f75a SHA-1: ecc9a2cd5d514fc784c1c39850bab7bd3f03e783 SHA-256: e7282ffd0197745dd74988ba4fece06e7a9aaad669e20d9051f1a1ecfee8f17c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics point towards the document being used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://allytemp.ru/uplcv?utm_term=clementine+by+sara+pennypacker+pdf PDF link annotation
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2b401bd5c---gomagakinabazebi.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16083317d91946---xaduzinoliwarip.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b96ff6d9ebb---40906966199.pdfIn PDF document text
    • https://giovannicaputoboutique.com/file/vezufakew.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b28cbd540---gigakopesawef.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/27790149413.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a342054852d---vuperujogafalaneleru.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607068cbe9248---nesojabimetedolubifizirim.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a447bd8b64---65356091427.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/65345808064.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/fujipofu.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/38300046057.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/16088d34b5bd99---kifimipisijal.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160723c024643e---dividisanex.pdfIn PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/5e77e809fcb966d56710ca3015ae3159/datiwurelumaxosoroparivu.pdfIn PDF document text
    • http://www.malagatour.es/ckfinder/userfiles/files/lirerotamorujuxetavad.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/pumatuwil.pdfIn PDF document text
    • https://mygoaltv.com/ipp/images/uploads/files/66099322972.pdfIn PDF document text
    • https://alzubidi.com/userfiles/files/todanumorejosatej.pdfIn PDF document text
    • https://restavracia02.com/userfiles/file/rufitu.pdfIn PDF document text
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607821b8dcae6---momexojegazozowapuvuwa.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/1c6bbdb3ee5ff0f0961ed63ecd410b25/89208528101.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1770df4f5f329af2c71ebfea8dc78aa8/zakajilafewuful.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/woxetowajisurabirujiti.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_off0000e79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79A 11036 bytes
SHA-256: 476015dfce648687cda5cfb7fd42315d79dbae520004587f1e4cf7c03d2116db
font_01_sfnt_off00010114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10114 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11926 23432 bytes
SHA-256: 0a99eae2f79de9bcc1543407a7c002c30b6fcae83181f2cfad3af46498ff2d68

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