Malicious PDF — malware analysis report

Static analysis result for SHA-256 fedbd2e946b885fd…

MALICIOUS

PDF

90.5 KB Created: 2021-07-14 03:42:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 1fbb3bc6ec43141983ab02596daca7aa SHA-1: 56af50c90198b974ac4327150c05263073cabcc7 SHA-256: fedbd2e946b885fd00f15be2781e07756a8948075d89202e738e8f4267bca268
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The file also functions as a link farm, directing users to multiple external URLs hosted on various domains, some of which appear to be compromised. These links likely serve as lures for phishing or to download further malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://lowry-averyreunion.com/clients/c/c0/c0e4e7922159a76f956c19110b7bfeb7/File/78087611334.pdf In PDF document text
    • https://wonkingchina.com/d/files/fenizazemazinasak.pdfIn PDF document text
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/160740baf97352---pafev.pdfIn PDF document text
    • http://logisticsnetworks.net/ckfinder/userfiles/files/nagid.pdfIn PDF document text
    • http://everbeenmagnet.com/js/upfiles/files/kisefodopiligapegolekam.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/verelusisijaz.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4bf417fd30---13215139762.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/favedamaxifaxubolulo.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/88297051810.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/a1ff129f7792727ccc4afa4b8244e2d8/35157503837.pdfIn PDF document text
    • http://greatnice.club/updatefiles/file/42395070640.pdfIn PDF document text
    • http://kalikraft.com/images/file/wariramuz.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2c6dc573a---vinexubix.pdfIn PDF document text
    • http://abwmercury.com/uploads/files/vajogekafofunukobojuboxa.pdfIn PDF document text
    • http://teamwork-poetschke.com/ckfinder/userfiles/files/tepot.pdfIn PDF document text
    • https://cosplay-expo.it/ckfinder/userfiles/files/kunixafis.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/dazuwozerawifenajuwip.pdfIn PDF document text
    • http://itkaufmann.com/images/fckimages/file/72161193592.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160d5fafab1bbe---xotejivigidamebiziw.pdfIn PDF document text
    • https://nada70.org/userfiles/file/xemajixekewegez.pdfIn PDF document text
    • http://goldway.jp/upload/board/file/gukib.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/39928191440.pdfIn PDF document text
    • https://sieuviet.net/webroot/img/files/bafiwila.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210503045619.pdfIn PDF document text
    • http://0930actress.com/files/files/49753903952.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=this+is+the+day+this+is+the+day+lyricsPDF 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_off0001019b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019B 16776 bytes
SHA-256: 9fda07a1e2e5befe8593b5ad1355d4662c737d40dce1712fde0954515d6c91d1
font_01_sfnt_off00012d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D27 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001453e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1453E 10320 bytes
SHA-256: 5648a2803c2537fc8a84917794328a3d00e83a3c296a5407c414ead7b41862cf

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