Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad34fba02f044819…

MALICIOUS

PDF

81.0 KB Created: 2021-09-06 19:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: a3104dc365fed70dd56f30404b01de2c SHA-1: e553ffdfdb589e66b97fee6f7e085dbf2e2628c1 SHA-256: ad34fba02f044819b91e6d5b4e94828ab60a9164065d1f6c068694b5bf8ac3bb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external resources, many of which are hosted on compromised websites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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 http://zjqzzx.com/uploadfile/file/2021063006081273499.pdf In PDF document text
    • http://pwr-tech.ru/userfiles/file/98361399599.pdfIn PDF document text
    • http://asorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/guzilokimilafamumo.pdfIn PDF document text
    • https://themis-lex.com/userfiles/files/51325723411.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/c8151f8769bf4309213545b3d5dda3a9/28295268119.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/b648777ac6600c573dace14972303b45/6874294228.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2fad9d051---zuwefixugasezez.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/qpsa2fpjck609bhfu8f30uhpp6/83966165983.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b08fcddf22c---porumikotorimeberewur.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/8vmh3nqu4hqrq60mti71ei3kfc/87467404002.pdfIn PDF document text
    • https://wildnaturetravel.com/File/69324454863.pdfIn PDF document text
    • http://0vote.com/ckfinder/files/20565621487.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/38725863010.pdfIn PDF document text
    • http://archissimo.eu/userfiles/files/484269854.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/b13c00cd824ff1327b5a3fae15a467d1/50058120825.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870f1fea9f1---xutitizisafaliwopaj.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/b6cqs4rfsf7ovc88pch6f6hmr7/tidukazokibezupi.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/93531129335.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/deaba38a33f02d5afcdd944dc3154dab/34361240555.pdfIn PDF document text
    • http://atek-ent.com/upload/file/15550349511.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a08830cbd3a---78788664436.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/28019528667.pdfIn PDF document text
    • http://multi-accueil.fr/ressource/site-image/files/85536337268.pdfIn PDF document text
    • https://wroclawmodelshow.pl/ckfinder/userfiles/files/20592503513.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a15d503a450---nimukineze.pdfIn PDF document text
    • http://villapellegrino.it/userfiles/files/sozozuwakezupexiw.pdfIn PDF document text
    • http://gtlmarinefuel.com/userfiles/file/gupudekivuzur.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=manually+install+device+driver+windows+10PDF 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_off0000dabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABF 16164 bytes
SHA-256: 7dcd1df9bf0255a240967d83b32f1657550f3f2355a7d11265c42771a46b04c6
font_01_sfnt_off00010447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10447 10896 bytes
SHA-256: 62d312a08abcefaade9dad6222a9271e35d5940db7f6c651b598ea0f9311a944
font_02_sfnt_off00011dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DBA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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