Malicious PDF — malware analysis report

Static analysis result for SHA-256 d502d095abe37453…

MALICIOUS

PDF

83.9 KB Created: 2021-08-02 10:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6224bb3f0e3b21a087b561cfa717e8c3 SHA-1: 2200a91ee42f35f4b8757a7fb8305094ff2e4829 SHA-256: d502d095abe37453ce65b4d36cc68147d90a0d9c2218a988bcba327f7a1bedec
156 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS uploads. The PDF structure and embedded URLs suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://queure.ru/uplcv?utm_term=how+to+clean+lawn+mower+air+filter PDF link annotation
    • https://airbays.com/userfiles/file/96916453175.pdfIn PDF document text
    • http://shosholoza.de/file/75989464119.pdfIn PDF document text
    • https://100tmt.com/uploadimage/files/20210708122238.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d17ac9ac2---43388879316.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/zalawosevan.pdfIn PDF document text
    • https://tourpon.kr/FileData/ckfinder/files/20210725_0917D53D79CBB674.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16071adf8e57f7---87150247726.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/60024786556.pdfIn PDF document text
    • http://andreaslasnik.com/data/files/vizomerogejifif.pdfIn PDF document text
    • https://alteanetworks.fr/img/file/54777250298.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/gejakoxot.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/vukivebubugogesas.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607780fcde4ab---rasiwafosokew.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ffb489065---tigav.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075aaeb21662---wivonaboneg.pdfIn PDF document text
    • http://bukharasuwanee.com/sites/default/files/file/21936263051.pdfIn PDF document text
    • http://stalmost.pl/userfiles/file/66871127633.pdfIn PDF document text
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/69cf27af5e5ea024b9d12fd7bbe43d17/24886098939.pdfIn PDF document text
    • https://promobryansk.ru/userfiles/files/7875741241.pdfIn PDF document text
    • https://imagebeaute.fr/userfiles/file/6401062780.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/bd0daca061e699c684c783b88d5a8460/mifali.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6d2eb60e8---22936340501.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/19dfdf10a8bc1dc37340ace3fc1cdaa2/48018343936.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1608510b60da64---zegotizisotok.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/lopugisefovukupivirulupo.pdfIn PDF document text
    • 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_off0000e70d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70D 16392 bytes
SHA-256: db2724d5cfdf7469318134fb88fccc2030633e5f6a9553630a0870753177aa86
font_01_sfnt_off0001117a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1117A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12991 10404 bytes
SHA-256: 304b5c93931c12787e0c510bff9739ef671139caa3319d3b6137160c9755283a

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