Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02518d5846f84a0…

MALICIOUS

PDF

166.9 KB Created: 2021-08-03 12:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 59b78efa14ec229814e6ff7737a0ad7a SHA-1: f6b2196157908788f4d6f6e0cf103a2c674a0c18 SHA-256: f02518d5846f84a0b85ab90f29265bbde4aff54d3f86f896df3ce35deb153764
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of external URIs and link farm patterns, indicating it is designed to redirect users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded URLs and link farm structure are indicative of a spearphishing attachment used to lure victims into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://garglob.ru/uplcv?utm_term=shariyat+ki+sugmad+pdf+fran%C3%A7ais PDF link annotation
    • https://publicbridge.pl/userfiles/file/88202647824.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/16077386636.pdfIn PDF document text
    • http://banlinhkienlaptop.com/userfiles/file/4297036610.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/8467a4b57d966891e0af420ea51cd0a5/sipikagu.pdfIn PDF document text
    • https://cape-electronics.com/media/file/jilekalatupegeg.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/0e2e4jomo8cf38ulrhamnoc778/wabiravevopirenej.pdfIn PDF document text
    • http://stolizstekla.ru/userfiles/file/67436798809.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd9d2d34c00---66714785804.pdfIn PDF document text
    • http://theettiares.com/clients/f/f0/f03dfc1790708d0b03c48e9879ef2ea6/File/bafujogabe.pdfIn PDF document text
    • http://studiotecniconuti.it/userfiles/files/42755976513.pdfIn PDF document text
    • http://dobre-jaja.com/Upload/file/55017133928.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/b11a87a48b44389e45a0781e61e89d66/28332771461.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16078d18d88ee5---40911390944.pdfIn PDF document text
    • http://podwierzba.eu/ckfinder/userfiles/files/fexiwusef.pdfIn PDF document text
    • http://hnatiukreunion.com/clients/b/b5/b5561851e3069b632e798ef7a1275556/File/dekonekaniro.pdfIn PDF document text
    • https://sportsslife.net/upload/ckfinder/files/dopozut.pdfIn PDF document text
    • http://terhautz.com/upload_files/files/kinozowexatakimuz.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/03739fa42b63d02aa77e7a61948b3e32/98455093747.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dbf6d0ab69---61235597975.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160dc79df84c74---jevawolumudaseribare.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/bdf0acfce4a6cd8399eb36c23498d638/lapotiwujigawonaga.pdfIn PDF document text
    • https://hoalavender.net/upload/files/5757421896.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/27501955f3a2ce5deade99d812b83a4e/13495981563.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/16233955642.pdfIn 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://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_off00022ba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22BA9 17736 bytes
SHA-256: 6b3c1f6301918d317e119ec740b7f20f8aef8735d445a643be9b3a59a35b95f7
font_01_sfnt_off00025995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25995 11224 bytes
SHA-256: 0b3c196a7614dd0000935c7bfebd29fa7a0469e0fb4fd32652d18bca78f9c47e
font_02_sfnt_off00027389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27389 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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