Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd5ba74ee3ccb8bf…

MALICIOUS

PDF

211.4 KB Created: 2021-06-29 23:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 647fe0c808ff86baddb745ddf2f5390b SHA-1: bab4bc97a2d201783304ff83bad6c0f86994ac65 SHA-256: fd5ba74ee3ccb8bf83f2eac6e0302d9a3d6bdd6a6602a600d27c38a88b70a7ef
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links pointing to compromised WordPress sites, likely serving as a link farm to distribute further malicious content. The presence of embedded URLs and the nature of the heuristics suggest an attempt to trick users into downloading additional malicious files, possibly through a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9819

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.
  • 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 http://nsfeed.com/_UploadFile/Images/file/nisof.pdf
    • http://caythuocdangian.net/images/files/vixekeb.pdf
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16098daf7c90b5---dixopani.pdf
    • http://111-orte.de/testarea/cwsCMSlight/media/files/ropavigowuwatezat.pdf
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608183d4dd121---zexodidejegifodamepi.pdf
    • http://albino-pitti.com/pub_img/file/49079161285.pdf
    • http://www.bufolari.com/public/immagini/file/xuvugexoforeras.pdf
    • http://omgmediatank.com/userfiles/files/23488945014.pdf
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/24c689ec6722b6ae8ccf47e8d9652612/dawolinu.pdf
    • http://zgkimsteszew.pl/img/upload/files/23309214214.pdf
    • http://namngonviet.vn/user-/files/2423762521.pdf
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a25edd0a6---nunine.pdf
    • https://szaniterplaza.hu/ckfinder/userfiles/files/novamobutovexasukoxeveri.pdf
    • https://2acontractor.it/images/file/64796076638.pdf
    • http://aire-limpio.com/img/editor/file/17242076039.pdf
    • https://study4student.com/cache/fck_files/file/kavoragaxad.pdf
    • https://genegurumiraclehealer.comuserfiles/file/81291154731.pdf
    • http://aryajob.com/user_upload/file/24188402214.pdf
    • http://abwmountvernon.com/uploads/files/fedajigirawinumi.pdf
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16073f0f334e4c---44396654450.pdf
    • http://kurskodkb.ru/page_edit/_samples/userfiles/files/40527862987.pdf
    • https://carea2plus.com/wp-content/plugins/super-forms/uploads/php/files/41da89d576fcacd1e021e3ab2bc2efcc/wunukidinovogasekesetof.pdf
    • https://summit-christian-academy.org/scauserfiles/files/xajewenutotogipo.pdf
    • http://anandamsanyal.com/userfiles/file/16861614929.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=timothy+god+what+did+we+do
    • 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_off0002c982.bin
90d228bf358fcd6f093428556e343eaada313003f54ce54c5b3ad2db9eb8b121		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C982 10440 bytes
font_01_sfnt_off0002e10f.bin
b4e010e734b4432006a5880e90a27e962bfc064df187375822ae3ea834af0124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E10F 34876 bytes
font_02_sfnt_off00032791.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32791 16792 bytes

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