Malicious PDF — malware analysis report

Static analysis result for SHA-256 56411178b66c8587…

MALICIOUS

PDF

77.1 KB Created: 2021-06-13 14:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d92535245868c837631f034a756b785 SHA-1: 4562f891addd9b1c217e36d8d9a239da60d904b4 SHA-256: 56411178b66c8587574fbd7da7ce27c0403dab396a0136e058f6867859ee37c0
156 Risk Score

Malware Insights

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

This PDF document was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan payload. It contains numerous links, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The embedded URLs, such as 'https://pixomot.ru/uplcv?utm_term=how+to+do+a+hard+reset+iphone+8', are likely part of a phishing lure to trick users into clicking and potentially downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://pixomot.ru/uplcv?utm_term=how+to+do+a+hard+reset+iphone+8
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c15c77cc7ee---61989321626.pdf
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb3421f678---gakipakupewosonagi.pdf
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a51804e3db5---97477060592.pdf
    • https://aronabritcan.com/userfiles/file/97554619647.pdf
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/ae3ed1778054e8ca4b6dd39fdcd8fd6e/xewekuvimo.pdf
    • http://jevades.com/aircraft/fckimages/file/xotevapigigov.pdf
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/qfa095d59b099mqpg25mdsfagr/3114394890.pdf
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/49ca578df1b85c75d1ea32ae6fac256e/xivilajidufamipilas.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160767546058cb---mirogipamo.pdf
    • http://adveotec.com/img/file/dorokolabumezuzoliko.pdf
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/8f2a4d33dea385b24cbffb13975f0cca/desosejaf.pdf
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/369d3a711c5e889b2211c156fa91ef20/lajajomonag.pdf
    • http://aggengr.com/uploads/CMS/file/duzosolijonuziget.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab66347bdd---48954265246.pdf
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/b1b9793a334ea303222949765e5db3c3/15816375515.pdf
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/98b85mmhn3o3ealhskcnpj80a6/medeke.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d89f.bin
b7b0042ba2c14e4de9097e8f52862ce6ef6d8963dddeca901d5f875a0b199b3d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD89F 5052 bytes
font_01_sfnt_off0000e9ce.bin
7dcfe2540fe8e76fd3121d04225e220d01893decbc3cba5837b16f3c2307c5f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CE 21568 bytes
font_02_sfnt_off00011959.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11959 4324 bytes