Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f952e1a6d1543a2…

MALICIOUS

PDF

87.5 KB Created: 2021-06-19 13:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: dc6effecf215c651006f20ba790e4fb3 SHA-1: a1afec72153b225ebfc09a4422bfeba1566d91de SHA-256: 0f952e1a6d1543a21324d6fa3c7a387439c49d6ef1dfcf954bbff70a3557c363
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The embedded content, though obfuscated, suggests a lure related to 'iphone 10x camera specs', aiming to entice clicks on the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • 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://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/8e6ff733d0227268404963f04647d939/30408498781.pdf In PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607301814ed0d---46319096289.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/c934708800fbce61e697428486f96076/76005577638.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160af9454f03b5---17654602983.pdfIn PDF document text
    • http://emannsltd.com/userfiles/70386557257.pdfIn PDF document text
    • http://backupcenters.com/userfiles/file/bazofozifofedasupej.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/140bcb8fdf9864ccce9bbe85598a012b/pofumafaxom.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/u7oq1l946q5bl1id3ufoeamtnl/wetovoregite.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608352ebd3241---61014213713.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/3975203627.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/38210794647.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/7jcerd12uo7flhsashl39m7ao0/wozelapibariwakela.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/0b02552a5edfffdbdd823e0b5cc4d021/vagip.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/a0eada1694cad23c3ad1799bcd725fe7/71796171821.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/oalpbsmbo2cel1po35t605tqbe/44480208515.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/19289620933.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a230b42bfa5---jixapelib.pdfIn PDF document text
    • http://bioident.pl/photos_fck/file/84755515106.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=iphone+10x+camera+specsPDF 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://scripts.sil.org/OFLIn 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_off0001038d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038D 5340 bytes
SHA-256: ab90c00c7b28cf72061e28ba1213f3a2fe33a56367fb74f99b49611be88d15b0
font_01_sfnt_off00011594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11594 11256 bytes
SHA-256: b9f226b4033555061eee35e10645ef724be2fbbc28cd45a40e490000406e0fca
font_02_sfnt_off00013c16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C16 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330

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