Malicious PDF — malware analysis report

Static analysis result for SHA-256 129d20b08b26966c…

MALICIOUS

PDF

88.7 KB Created: 2021-09-07 10:37:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5036fe2e3395327ba13785ef1f16067d SHA-1: 88f6a7dc38fec674ad481b459fccb6d9e8809ded SHA-256: 129d20b08b26966c55c2619fa26a650c8fff8fb53da9a71db6b592dc5ce55dba
124 Risk Score

Malware Insights

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

The PDF document contains a link farm pointing to multiple websites, some of which are hosted on compromised CMS upload directories. The ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly suggests a phishing or trojan distribution intent. The presence of numerous external links indicates an attempt to redirect the user to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2664

Heuristics 5

  • 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
  • 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://musiconthebay.org/clients/2/26/269dd5bc96e197da989a8dccc71442af/File/66285227370.pdf In PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/16085c31c01fd1---68881802367.pdfIn PDF document text
    • https://soechi.net/userfiles/file/xobepozibafobosivu.pdfIn PDF document text
    • http://truhlarstvisollner.cz/data/file/lebokuwiw.pdfIn PDF document text
    • https://a1-recruitment.fr/v2011/Files/fck_upload/file/73045134741.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/cj2qv2k3ptgs6g9jmvq25ovne7/nepipisopofusawigaru.pdfIn PDF document text
    • https://maisonforville.be/documents/file/28677765675.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/347c54bd201882014a2382ff476b524c/12210911655.pdfIn PDF document text
    • http://daydreamspin.com/userfiles/file/86475478604.pdfIn PDF document text
    • https://www.douggoodkin.com/admin/ckfinder/userfiles/files/fifevorifijuworuwijopi.pdfIn PDF document text
    • http://ahchala.com/img/file/bosasofewuputale.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e505acdb58---dedizowekesupaxasegi.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160798a8e582b4---tipolivubebopuxam.pdfIn PDF document text
    • http://konemara.hu/userfiles/file/jubibi.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fbcf18974f3---2083619617.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1606c90987cee9---nevupe.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/8831dfdbe9ef0792202b3a836aa5511a/1012148746.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a20c0d3d0795fb26f0f2afb5b57ffa9f/bubuwevogasuvexewo.pdfIn PDF document text
    • https://istanajpdua.com/contents//files/74285540594.pdfIn PDF document text
    • http://prplus4u.com/ckupload/files/safilevut.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/15725609305.pdfIn PDF document text
    • http://xn--h49al71atridzo.com/userData/board/file/mizodegulevawuxabevipur.pdfIn PDF document text
    • https://wittnebel.dk/file/nademuxaxisipigirux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=latitude+and+longitude+practice+worksheet+answer+keyPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114E2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CF4 17512 bytes
SHA-256: 55b40b1338686443dc31c7a2490027eb4a202c25931d2c8c7ee673b23899d68a