Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f727d21a84bebbc…

MALICIOUS

PDF

90.7 KB Created: 2021-09-01 22:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: dc60379b8ab0fd544c10b2e4345d147b SHA-1: bb8cd2b93c40ea4ac2d8b48b89d0586749c7c5b2 SHA-256: 2f727d21a84bebbc49134902a16cc72dffc810c32fbd285f4234e684018ec141
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous URLs pointing to compromised websites and link farms, indicating a phishing or malware distribution attempt. The PDF structure and embedded links suggest it's part of a phishing campaign, likely delivered as an attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://smidgel.ru/uplcv?utm_term=chemistry+final+exam+review+packet+answer+key PDF link annotation
    • https://ipic.vn/userfiles/file/bivif.pdfIn PDF document text
    • http://aggengr.com/uploads/CMS/file/rofibukurod.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9718e00b9---janabefetoliliwofama.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b63c0a20c04---89105706339.pdfIn PDF document text
    • https://growyourmoney.in/userfiles/files/4633352546.pdfIn PDF document text
    • http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/gujutas.pdfIn PDF document text
    • http://thejosephinebryantfamily.com/clients/48776/File/99253197112.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/49dad0cf794fbabe98a0b6c46f9cfe95/831635581.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee5f76a2e11---77896830158.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/fevoworuvozam.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/6b9aff95f116943063138307da7dffe1/vexaxenimeketu.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/ibh0sarqvmrm91i6hcr67jgig5/67967319555.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-5/20210505075349712153.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/10528364025.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa727ee8aa0---57886087008.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1608657911fddf---bozepati.pdfIn PDF document text
    • http://epmresearch.org/userfiles/files/tosobesexipi.pdfIn PDF document text
    • http://secretinvitation.net/images/files/gevunijipemilixos.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/cq56u7avgr53o9fu1pgd88ln3b/lipudonorokibebonul.pdfIn PDF document text
    • https://thisissati.com/userfiles/files/xafifarumazebuxe.pdfIn PDF document text
    • https://sthouseluxury.com/upload/files/kowuriviriloputiwoxar.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/20175094042.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_off0000f6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A0 19560 bytes
SHA-256: e598b99a63be1238e062b8b4690860eb6049fe7d970c9fd92d402fb0a0578bbc
font_01_sfnt_off00012a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A4E 11116 bytes
SHA-256: 133c39aa0ea4d3ddef5ba5a254ae01141744b0b3af9b64f262ccfb717c2f44a5
font_02_sfnt_off0001442e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1442E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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