Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abbecc38f02006e…

MALICIOUS

PDF

82.9 KB Created: 2021-08-29 05:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0dc43c3398ee011062238cc3afb7623c SHA-1: 1099c8189ed50cc18ce814e62540e7caf68556ce SHA-256: 6abbecc38f02006ec10087eab7e9b3b6a15d9492de8536a60116a35caee16798
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as containing a link farm pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV also identified it as malicious. The document body is heavily obfuscated, preventing analysis of its specific content, but the presence of numerous external links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://vibangthuaphatlai.net/uploads/files/53156150064.pdf In PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/banimix.pdfIn PDF document text
    • http://domeinbeverdonk.be/assets/files/file/fonijitagijexu.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/7b9578bc8d1e9118e0380c73af57a024/zigib.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160809ee3815c8---wiwivekekoporodotimej.pdfIn PDF document text
    • http://designgaleria.hu/userfiles/file/39815232071.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2021-6-21/20210621124205427420.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/43535768555.pdfIn PDF document text
    • http://londonjip.com/userData/board/file/8326695283.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/sitonoxaweduwoliveb.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/kakikuvorudosal.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca2f26228a---xagiso.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/145fb5cc0b4e3e14b1e5c4176dac8fe2/zumotirupenevoxu.pdfIn PDF document text
    • http://kavernoklub.com/campannas/file/86757962527.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce64a1c2fb---73386654491.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/mulagidov.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/280351118834.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b3a0d59add---kesenasogamubutopi.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/4bbce4e3e3854ff15012de7053fc25f2/31960273696.pdfIn PDF document text
    • https://cfbadalona.net/ckdata/files/davosibo.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/wenel.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/56124517939.pdfIn PDF document text
    • http://vanhacollection.com/images/files/dozapafosowufibalisixukuf.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16094cdcaa5678---82647240455.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=top+boxing+heavyweightsPDF 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://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_off0000dddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDD 10856 bytes
SHA-256: cf9cc1c484c30834176fb69c0602d89da2ebaca7ae7b37f22f43640ce2895929
font_01_sfnt_off0000f6c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C8 17696 bytes
SHA-256: c883773a8d0f7875d85e3652fb9c3b545c2529efa37abe0c1c609730645f2f74
font_02_sfnt_off00012549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12549 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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