Malicious PDF — malware analysis report

Static analysis result for SHA-256 952200b1dda5d7e9…

MALICIOUS

PDF

73.8 KB Created: 2021-09-09 08:08:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 401cab7fc0b6fd8462abe0530c03cf7d SHA-1: 7e60eacb623ea242df899308c15bbdf4b0b4f09f SHA-256: 952200b1dda5d7e9628c21a6ed859aa73b9502dd59a789b4a988751afcf2fb7e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with many URLs pointing to potentially compromised websites or disposable hosting, suggesting an attempt to lure users to malicious content. The presence of external URIs and link farm heuristics strongly supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://bostaninsaat.com/image/files/lerimejubiba.pdf In PDF document text
    • https://alakharia.com/public_html/userfiles/file/11564807777.pdfIn PDF document text
    • https://ambalatender.com/upload/files/tiluzibepotaterolomewu.pdfIn PDF document text
    • http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/lazamirowebasoj.pdfIn PDF document text
    • https://ganport.pl/userfiles/file/32296806164.pdfIn PDF document text
    • http://internet-trade.eu/UserFiles/file/78894002579.pdfIn PDF document text
    • http://www.badischer-kunstverein.de/ckfinder/userfiles/files/9094068094.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/161334672d150d---dagarutuzep.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/4i109lj620vb5dgs6cin5rrt03/pusozajepuz.pdfIn PDF document text
    • http://ccsilver.kr/files/fckeditor/file/17965052826135b39aa8e23.pdfIn PDF document text
    • http://longthinhphat.net/uploads/files/vavavesuvolep.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/deduridiforeb.pdfIn PDF document text
    • https://lochoanggia.com/upload/files/lelirotaxaguzozode.pdfIn PDF document text
    • http://blankheich.de/images/uploads/file/pekapodutododurudulor.pdfIn PDF document text
    • http://eastindiaspray.com/suvra/eastindia_spray/files/9473232695.pdfIn PDF document text
    • http://tomgiongvip.com/uploads/files/file/54039458744.pdfIn PDF document text
    • http://bigcool.net/webroot/img/files/filipufimuf.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f5d604a991---suxozogodi.pdfIn PDF document text
    • http://fermobkorea.com/userfiles/file/20210907180720.pdfIn PDF document text
    • https://jocafoto.com/fotos/file/79603803587.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/e5ed664569e49db239e6d2ea06abefa3/26875841292.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/20578731589.pdfIn PDF document text
    • http://jmvlpslimited.com/ci/userfiles/files/sisuzibeliw.pdfIn PDF document text
    • http://hkxhjfc.ltd/uploads/files/20210909102501.pdfIn PDF document text
    • https://ismet.com.br/ckfinder/userfiles/files/vovoda.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=dragon+ball+super+dub+kissanimePDF 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_off0000bd49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD49 16948 bytes
SHA-256: 9efcd40af55e2c984840a02e6facdc1462b4a0f370d7ba4d02717ef16479bcc6
font_01_sfnt_off0000e91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91C 10972 bytes
SHA-256: 275af9f038ad82eea35bafd497fd72e4659f8fd2848f3cd5c141da948a4ad846
font_02_sfnt_off0001020e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1020E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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