Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d128c11f5d32d5…

MALICIOUS

PDF

77.4 KB Created: 2021-09-13 16:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 94d9feff15f00c2cd75fd53f8771a227 SHA-1: 4e29ac9ef7a1886bee5e93411d20659bfee41c45 SHA-256: d0d128c11f5d32d568b74db4dc258adddd2a937d8b31c9774f6992cd725ed599
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to lure users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://messianic.live/wp-content/plugins/super-forms/uploads/php/files/b75d4e67914d771cd3efc7274e22da81/57838044652.pdf
    • http://studiogalata.it/userfiles/files/58049653067.pdf
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed1080190c---titama.pdf
    • http://pretaporter-pegah.com/userfiles/file/buxedabogiremad.pdf
    • http://montazenabytkupraha.cz/files/file/vozitexepewofetejezo.pdf
    • http://indyztyle.com/ckfinder/userfiles/files/77718014031.pdf
    • http://airmon.hu/images/files/xumomememugutetaleg.pdf
    • https://gitedu.in/ckfinder/userfiles/files/gezugemuvogu.pdf
    • https://episcopiaoradiei.ro/files/xoradepulanepik.pdf
    • http://spy-military-labs.com/userfiles/file/mupunawegamakanizonivip.pdf
    • https://360clothing.indicsys.com/home/www360cl/public_html/uploads/images/files/popuzine.pdf
    • http://alisawedding.com/upload/users/files/44938976013.pdf
    • https://vitanov.rs/files/59548205452.pdf
    • http://lideparts.com/userfiles/file/1630922113.pdf
    • http://pelesiuvalymas.lt/i/File/ximinuze.pdf
    • http://studiotecnicofrisoli.com/userfiles/files/bivotug.pdf
    • https://sakkestadbil.no/userfiles/file/guxebixefonafujoxi.pdf
    • https://mtestbd.com/assets/uploads/files/45733032441.pdf
    • https://pass-eco-energies.com/ckfinder/userfiles/files/59989747372.pdf
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613df97747379---goxopijorelezofipisak.pdf
    • https://micro-logic.ro/images/uploaded/file/47185440451.pdf
    • http://headrepublic.pl/images/files/64284425052.pdf
    • http://mh-gartengestaltung.de/userfiles/file/53258762962.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=youtube+downloader+software+free+download+for+android+mobile
    • 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_off0000c9d4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D4 16792 bytes
font_01_sfnt_off0000e1e6.bin
8416dfa8b0b76a017dc44efee7f13bcc2664504b77250497a0300599a33ce703
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E6 17208 bytes
font_02_sfnt_off00010df5.bin
c91d5f1519a37411a7e94e9795e28e6a657d6eacc5b3dc3b431b1905e194a72c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF5 10824 bytes