Malicious PDF — malware analysis report

Static analysis result for SHA-256 69ee2662b7684668…

MALICIOUS

PDF

81.9 KB Created: 2021-06-10 05:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eed3d30bb803312a50659e04dc57b12e SHA-1: d3d1c4a056b7ae81c0fe12221d98ded7132dc5c5 SHA-256: 69ee2662b76846687bb25b6995b50a19d7f3be26dba666b08aecef810365bf5b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

The PDF document contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The 'SE_CLICKFIX' heuristic suggests the document may attempt to trick the user into executing commands, likely to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 https://coretry.ru/uplcv?utm_term=how+to+find+deleted+search+history+on+google+chrome
    • http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/xojelamofis.pdf
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/9c926677f2a4b21033a2427b7c684239/14445461746.pdf
    • http://thunderstar.cn/userfiles/file/20210501164158610684422.pdf
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608065304a44b---sorajamililikopedoj.pdf
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/25d7b06bfba88eec3d88b5840c030c66/wolotixodolubebujeni.pdf
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f2402170c---419295241.pdf
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1fb84fd72---loburubonikawokemajek.pdf
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/16090903145f5d---72178936190.pdf
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a508a80499c---35602340758.pdf
    • http://cariboohose.com/userfiles/file/93927598185.pdf
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/o7ovnk27js5pfj10s0568vq12n/19069728944.pdf
    • http://abimobiliare.pl/pliki/File/menimazepifaletazumajurez.pdf
    • https://cgeminfos.ma/upload/file/suniraxogemoduzo.pdf
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/0c998ac3438fee5578b7e066bf534e7b/34453294399.pdf
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/kakofupanugawobi.pdf
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070f9673f0de---48455490197.pdf
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/941c694da0840dbdbeda71cdead27d0f/fufivegifovufosefawatada.pdf
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/t5hiut8udnifrpqcp138gdbseg/jikurupovurewenokodit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000f4b0.bin
19fe6d3511270ee3ff4fbce704f5f4a9fb9182a4344e37e40a38d55828b07e20
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B0 3312 bytes
font_01_sfnt_off00010091.bin
fbb922767945bb8c8484a2afd4a43c8f5fd1c5189d118662ab4a89529e56ca6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10091 5592 bytes
font_02_sfnt_off00011386.bin
611bd8c4c0bee6b45ee77ad43e2762c8410bf173c6453bbcfed717fcc454f880
pdf-font-stream PDF embedded font (sfnt) at offset 0x11386 11448 bytes