Malicious PDF — malware analysis report

Static analysis result for SHA-256 05efacda2596d684…

MALICIOUS

PDF

65.8 KB Created: 2021-05-21 11:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43e5462b800a4fab067438caeb9a82cd SHA-1: 722e313cdb8319d7bb769e009656c2263ceafea3 SHA-256: 05efacda2596d6843813542502dd24ad85f38f29bf0ca5b6ebe55d671436e4c6
154 Risk Score

Malware Insights

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

The PDF file contains numerous links, many hosted on compromised websites, suggesting a link farm designed to distribute malware. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports its malicious nature. The document body, though heavily obfuscated, contains references to software downloads, aligning with a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8377

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://lycee-elm.org/userfiles/file/16512623566.pdf
    • http://amphorabeautyclub.com/campannas/file/88462346569.pdf
    • http://hanboo.cn/Uploads/file/2021052102453770554.pdf
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e05098290e---wunonozagefup.pdf
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/liel8p4ql8s01vm3krg16dartp/15495527298.pdf
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/kt3mvp6e0iat79mm7vdh00uinq/81283379532.pdf
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16076a948cfc2c---xejafafewudobirofoz.pdf
    • https://www.temsilcifirsatlari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607949a6d33cf---85351609486.pdf
    • http://aircond.md/upload_fck/file/rosefadaron.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607576cc38216---bepotaselewadoz.pdf
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/a8db7165380988ccaa9bb125dca394fe/70565011724.pdf
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/d863f1c9d61ed0f919a8d6fd915e04ab/bunakizamunerukezifiro.pdf
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/574d9e732e69609c486f11028320e626/72525299423.pdf
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a425f251e5---xadelimomujajirov.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/7af67a9527e5484ac6e5db8a356eb870/8675085229.pdf
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092150b566f9---kolafososipifakuramogezu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=download+free+norton+ghost+11+bootable+cd+iso+image
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd6e.bin
a30e3c3d1ec20c0dc485d9a2b85d850587e79d3c8acd16c1530337ca70bf360c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6E 5716 bytes

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