Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e56e7c4c3a00b8…

MALICIOUS

PDF

85.3 KB Created: 2021-08-02 06:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 6e704757f72d8cdc131619e4b03b49a8 SHA-1: 0345daf49eda7530e8be41b161ba2bb193658f00 SHA-256: 96e56e7c4c3a00b865bbc948e742ba3fefdcc2f1181a9eca61fa8b78d35a8879
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of a phishing or social engineering attack. The 'SE_CLICKFIX' heuristic indicates the document likely instructs the user to execute a command, a common tactic to bypass security measures. The numerous embedded URLs, many pointing to disposable hosting or compromised CMS uploads, suggest a link farm designed to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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 http://n2nnetworks.com/files/others/24912283420.pdf In PDF document text
    • http://kulturazebrak.cz/userfiles/diwufasorulidowiwerotebof.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/4oslkrf9ubfi728qfo621pnnp2/rigudasiguborokasujep.pdfIn PDF document text
    • https://cape-electronics.com/media/file/penipexabuv.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b473c40610---womikixatinadojugapetapek.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bb1a6d68592---50999880839.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/2f0ddc8138ee3f7eb3d66d988306857d/gebexiratigex.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/dqnu7b2ki8nrgkem3s86htss0f/27008001614.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/ca571b6b13ee47c25cf5fe4a7f8a2ec3/vuwivikakenidotuxefamokur.pdfIn PDF document text
    • https://tiklatakip.com/calisma2/files/uploads/2730416297.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/ae350c3c5a1c21d8bcab2668be969217/topexenikedopati.pdfIn PDF document text
    • http://georgekoldun.com/var/upload/file/jofobogevamitowew.pdfIn PDF document text
    • http://yevres.fr/ckfinder/userfiles/files/lekawanegukedumezuj.pdfIn PDF document text
    • https://soccerauquebec.com/userfiles/file/vokew.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/96350505415.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/46339695102.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a49fbaf4126---68315840235.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a2cb74efe86---zosurosotu.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160baafe9e0b2a---gejenorulefupas.pdfIn PDF document text
    • http://birnagarcollege.in/userfiles/file/46287595503.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160812b73d4b5d---4044091014.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16084ceee47ff9---xumof.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae82dd48720---xofezesegas.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160851edd548d2---biladukaninuzaxeg.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a16bd3a885e---58840495767.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=how+to+watch+rogers+ignite+tv+on+laptopPDF 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_off0000e820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE820 17200 bytes
SHA-256: 50bfb4f2400559fd9977091928a50407517ab415a4f9bb5d874582e90c918b8b
font_01_sfnt_off00011520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11520 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D37 10796 bytes
SHA-256: 7a2ba157670ac285359a29b6935120e75f9258e64e55ea6f4e96980cb85c954d

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