Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbc48331554e2d9…

MALICIOUS

PDF

71.8 KB Created: 2021-09-05 04:46:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e05595a8d9494fb7fa655fbad629ec03 SHA-1: e5c44722c923fe917fda39cb2d7b1b878122594d SHA-256: 2dbc48331554e2d9b69a97ccca20263e3390a0f7199355fcb7c026e781c3cb35
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content or phish for information. The presence of multiple PDF link farm heuristics reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/ab134fb8344569b7b4302565eaa24a25/98178263444.pdf In PDF document text
    • http://tramtronbetong.com/uploads/userfiles/file/71002207502.pdfIn PDF document text
    • https://glbtrader.com/userfiles/file/sezigev.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1611e1ac0dc8fe---9464475020.pdfIn PDF document text
    • http://clinicoral.com/img/userfiles/files/15192141680.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/5b0a996be5315ab84fd1ceb87f82638a/45874153801.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c51e5366f03---rikaneruririmale.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160b090d3c2b18---divulozewovilasataso.pdfIn PDF document text
    • https://netiko.fr/img/Data/file/42050752428.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160af948aaf31c---84093667242.pdfIn PDF document text
    • http://robotsuk.com/luckingbros.co.uk/userfiles/files/wosijosekukasufanugig.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/11442651884.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f172d380ca---patozatuxaxiwaf.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/bigipujoxileleki.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608112ddf4074---wokepimugiwadi.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/3882e0cdfa57d6b7e74716f72c922404/27861185070.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160802d06d217c---zozupogabagalok.pdfIn PDF document text
    • http://nelly-design.ru/upload/files/70138504193.pdfIn PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/56259024643.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4ac0350a3---wuvenazib.pdfIn PDF document text
    • http://tchid.net/userfiles/file/xinudofokegatam.pdfIn PDF document text
    • http://nedirajtebosnu.net/userfiles/file/nulojozi.pdfIn PDF document text
    • https://rubyyadav.com/nbloom/fckuploads/file/zakuvufujadobo.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609282861fdd9---nepimenuxijudubemewizako.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=manual+de+instalacion+intercomunicador+commaxPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB85B 10724 bytes
SHA-256: 1fdf6944e88beae42ba9b68102c74ab4e6cddf67dec6a04da823a4be40ba6aa6
font_01_sfnt_off0000d0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F6 15704 bytes
SHA-256: b528d8c1ef05f49f889f721d376a5cfeceb0e6187d2c736b1dd9b17ddc3065fc
font_02_sfnt_off0000f9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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