Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2df23a7d6b378c…

MALICIOUS

PDF

79.9 KB Created: 2021-07-01 00:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f7f186029f3d97eb11421c5b8453d5bd SHA-1: 86efd924c72dc8bbf0eba12aad71b7b19f231d26 SHA-256: fe2df23a7d6b378cad7fc7f215c7a5a8a17f2bc0f5f8014a0644a4014360721c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure point towards a phishing or scam attempt, likely intended to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://aljazeerahdrilling.com/userfiles/files/xadutare.pdf
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/2f4e17df5507c34040ea98dead0bf6e2/69492806736.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080f94e82587---79701730591.pdf
    • http://stainless-faucet.com/uploads/htmlupload/files/83859302819.pdf
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/2021621142755511.pdf
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2a71c6121---38660016931.pdf
    • http://aarogyamedico.com/userfiles/file/18927696111.pdf
    • http://s-privod.ru/userfiles/file/45174641352.pdf
    • https://tenekedjieva.com/uploads/file/kakevuwisejoxirevarus.pdf
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/26f4b1e0d693c19478c76bcc05f06be7/wopulufiw.pdf
    • https://heritagecambodiatravel.com/userfiles/file/18228298128.pdf
    • https://conexkarvan.com/cache/fck_files/file/14376071529.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160957945e0eea---putuvaxowun.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/9dacc7a831962d320bddbf0d31994e26/xemaxukud.pdf
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/85rajq5k5u1mbb8h61tpsuh4be/19089901501.pdf
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a292b39c9cf---53837459752.pdf
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074bd04b06e6---41561128435.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a5d451ab402---94326361170.pdf
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/190be4b280ede31632e88498a2b95f82/doguperepasenemalag.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609c56b88b6f0---levifibuseguneriw.pdf
    • http://liburnia.pl/userfiles/file/kejivedokikotizafegibe.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88c6ac7770---guxal.pdf
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160704f942c1e6---xigejukujufunapigis.pdf
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/gnkkarsinj16mtu6ble7ucrsl5/72705649950.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/9c4e859c475340e30b7a1bb53287cc31/tofatagaxawubazebawa.pdf
    • https://karinbentum.nl/uploads/file/5996731255.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=mbusa+owners+manuals
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d644.bin
d73003d098783cecc3df44aa5c88621fe5a0f82b0f5c92cbc184d2906ae4932b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD644 10400 bytes
font_01_sfnt_off0000eddb.bin
1df0e154e75591a3c05f7c5c8d5f5f86b5504934d766e1b7a0db99311b520689
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 16900 bytes
font_02_sfnt_off00011a41.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A41 16792 bytes