Malicious PDF — malware analysis report

Static analysis result for SHA-256 760eaba65ada0f32…

MALICIOUS

PDF

83.0 KB Created: 2021-08-31 02:24:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 28738d8d450daea96f5526c09e2d0272 SHA-1: 7d3764f5c00c5fa947d80b3419374034e1140796 SHA-256: 760eaba65ada0f32ebb9145f48293205631dcfc1d6992fd5badcaed47844ed8b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to multiple compromised CMS upload locations and disposable hosting sites, suggesting an attempt to distribute malicious content or phish users. The presence of embedded URLs and the overall structure strongly suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://mallncart.com/userfiles/files/tefewukisekunuf.pdf In PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/bikomuxavalevararojil.pdfIn PDF document text
    • http://glovimex.com/uploads/ckfinder/files/2140312598.pdfIn PDF document text
    • http://e-sportis.com/images/upload/4688009253.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/efcdbe3c562af164bb9ee2a00447ec3b/96263487709.pdfIn PDF document text
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/776b70a06a16a6f155fb3b7a13a47cca/dudogisezugud.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b74671d89e9---wadakalaximaxe.pdfIn PDF document text
    • http://limeitec.com/upfiles/editor/files/pigowowufiwuxokabu.pdfIn PDF document text
    • http://africa-emergence2019.com/userfiles/file/fodugutevutulolokora.pdfIn PDF document text
    • http://tootingtaxi.com/survey/userfiles/files/82244125376.pdfIn PDF document text
    • http://hanasushimenifee.com/uploads/files/72269011268.pdfIn PDF document text
    • https://globalcircle.club/userfiles/file/12264684396.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/42956418728.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/5ba6a508bcc45bfa166532dee039e39b/wuparosewimi.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/xoxepidipi.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16072659cc207e---muwumewizojitobodorolexi.pdfIn PDF document text
    • http://urgentcarepb.net/userfiles/file/temojito.pdfIn PDF document text
    • http://gmart-express.com/demo/uploadpic/file/mopagalemadukol.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607093915c5b8---sagul.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ea2f34f63---famumamiparurenosizixeko.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5a9bc4d1d---66296514380.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/8375a9207507460758bc305c5254a678/38446040885.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=that+was+sillyPDF 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_off0000e1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C8 17888 bytes
SHA-256: f93cf0263b8fd06ea4fe592e315075d69dd61a0a3e781f2d7f21de1f5c499d5d
font_02_sfnt_off0001281f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1281F 9912 bytes
SHA-256: 509ced13b1859505601154f391178e31c672b591e52ea8c11b05f49cec484439