Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e070e97e495362…

MALICIOUS

PDF

73.9 KB Created: 2021-06-21 14:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 536627ad07fed12a88afa374e6dc9d5d SHA-1: c681dc531cd0b09798ed9311525a3c48ab621252 SHA-256: 33e070e97e495362fcd1f44391db9df7334b7dd7ea872c7b089c063b29b481da
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by multiple heuristics and a machine learning classifier. It contains a link farm pointing to compromised WordPress sites, suggesting an attempt to distribute malware or conduct phishing. The document body mentions 'Gta vice city mobile version download', indicating a lure to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://queure.ru/uplcv?utm_term=gta+vice+city+mobile+version+download PDF link annotation
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/dbb7c160c195afbab7479ee7b9772ae3/5310668759.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160738d80ad8bc---duxilufafadozotosezunis.pdfIn PDF document text
    • http://facilitymanagementassociates.com/survey/userfiles/files/26117153777.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/77222864134.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607342f3c9054---63487344620.pdfIn PDF document text
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a7b33ecb1---sadatipanutumovon.pdfIn PDF document text
    • http://kfbi.ru/content/file/81722808658.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/a40k0k81dduhsveddgdm92oe35/kakepiramoj.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16082c6e696a38---7302720278.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/2b2d3e526c0721676847e932bd5f5293/jebanuzadobeneponulenene.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a411d29ded6---90288789244.pdfIn PDF document text
    • https://easypayindia.in/userfiles/file/4221093757.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2aa00cea64---16228340410.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/d94c05be54f06ef9f4c362fc69a92f6e/63719651997.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/nebofevigorutede.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/52u7k4lgpg0lmu3r5sr76037p5/ravumeduwugakodavamixega.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f89e64a5ad---95391401587.pdfIn PDF document text
    • http://k1a.ru/images/files/file/72053945557.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AE 5508 bytes
SHA-256: 6e58a1996df3997501d5f1c3c2fad611d923aada61eb5c9300d4c0408a7ef136
font_01_sfnt_off0000f56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56C 10812 bytes
SHA-256: bd36f3dfea9125f1982368a5882d899a80e38eed44cde74c05232fb23177e290