Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ae69ed88ff74dd…

MALICIOUS

PDF

81.4 KB Created: 2021-09-16 02:09:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 11251dd593832f35a9318092be683f63 SHA-1: 31f4fd53a575bca8a1f8d067a0e78ad6926ad630 SHA-256: 47ae69ed88ff74dddde76f4537bd81af9d1cac85ed4b1aba13c2ecbe7d2119a0
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm pointing to various domains, many of which appear to be compromised or disposable hosting. The URLs are designed to lure users with search terms like 'photoshop free download for windows 10 crack', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://cructi.ru/uplcv?utm_term=photoshop+free+download+for+windows+10+crack
    • http://khodahoanglang.com/admin/webroot/upload/image/files/80459205159.pdf
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16142602e2a03b---92159124073.pdf
    • https://yuvasarkar.org/userfiles/file/tarenixefipi.pdf
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/161325a86179d8---fezom.pdf
    • http://dalhousieretreat.com/cote_dor_import/admin/ckfinder/userfiles/files/nivesezinenosafoneruj.pdf
    • http://xzass.org/ckfinder/userfiles/files/mowagotilenedirejodezadu.pdf
    • https://verredistri.fr/xmedia/file/49595760158.pdf
    • http://sabaispa.net/userfiles/file/zazupolizag.pdf
    • http://ageddfjtjgrade.pretty-match.com/upload/files/vovidujexuzekutajej.pdf
    • http://rymwid-training.com/userfiles/file/xugur.pdf
    • http://tonghuichem.com/upload/files/jajewilavuro.pdf
    • http://xn----7sbjvweekof5d.xn--p1ai/files/files/68366099597.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614000502c532---62014252090.pdf
    • https://petribax.com/userfiles/file/xawijujiguzino.pdf
    • http://teplorium.su/userfiles/file/getivamefasimujabixigal.pdf
    • http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/togebolefagabojeragivuwiz.pdf
    • https://chiataiec.com/userfiles/Proj_Name/files/tuvibidepigubozapi.pdf
    • http://ducthanhtam.com/uploads/userfiles/file/55570880184.pdf
    • https://jmtours.co/aym_image/files/nosivekotusajameke.pdf
    • https://pollackmihalyiskola.hu/ckfinder/userfiles/files/luwuxufafoxukakarati.pdf
    • http://turatabor.hu/media/daxezijevaxazebibo.pdf
    • http://przedszkolenisko.pl/userfiles/file/4902950837.pdf
    • http://desushibar.com/userfiles/file/10747152391.pdf
    • https://audit-advisers.com/userfiles/file/bewivubafobefevafojo.pdf
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db03.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB03 16792 bytes
font_01_sfnt_off0000f31a.bin
f5f872fb593545e74678b44a7227c7b8da929cdc5c10a63aadd651e2ec9fca1b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF31A 11068 bytes
font_02_sfnt_off00010cf1.bin
0be45a80224f001ca2105d8d91e89e34715d7865b91441db24ca31721b86f5ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF1 16756 bytes