Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9552fadc90aa224…

MALICIOUS

PDF

96.7 KB Created: 2021-08-14 09:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 1a501ffc95cb07fd81e63bc58f955c53 SHA-1: 81a5817fb61616caf91daa37e4fe22bd7bd93850 SHA-256: e9552fadc90aa2243c6d3ef3b8fb2e0dbc573623ac228535998c1c8d5b6121a5
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to various websites, many of which are hosted on compromised CMS platforms or appear to be disposable. The presence of 'utm_term=aimbot+free+fire+hack+app' in one URL suggests a lure for potentially malicious software downloads. The document structure and numerous external links indicate an attempt to redirect the user to external, potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://www.indoorclub-informa.com/boletines/img/file/81984923267.pdf In PDF document text
    • http://abwingscolley.com/uploads/files/5959025660.pdfIn PDF document text
    • https://85097781.com/upload/files/21846025752.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/71613465978.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/2ee1dff8f3ca73faf4add35e17352959/beporufuwule.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609836e7a0362---37327638576.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/9ab57be3436a3620941fee0258e1284f/lavugenigarojuti.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16083cdc25de90---99437629910.pdfIn PDF document text
    • https://renetravel.ro/images/files/jonivefujixiluxizopa.pdfIn PDF document text
    • https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/k78ss30uujfiel0chn18t8c752/zizanegobaseluruto.pdfIn PDF document text
    • http://hphs1958reunion.com/clients/47465/File/vununudewuduxagonov.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/5f9e27cd163eb9aea6c4cec31629efbc/79893551284.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/zirutexisasatab.pdfIn PDF document text
    • http://ketoanantamhcm.com/uploads/files/45334919235.pdfIn PDF document text
    • https://actor-conseil.com/files/file/lidilenepu.pdfIn PDF document text
    • http://imhyuk.com/imhyukeditor/userfile/file/45166283210.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160924d9c689a7---fikarobogabenolakuxesuk.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/juvonukizorevufod.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/phh9ao8qkjtl6np632b7e96lnm/18480950053.pdfIn PDF document text
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/8ba1836i82f7j02vpf1sgisooe/pabodaxodadege.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/07f635c2e6f42ef7e282af367e7df851/60912644803.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/70ce77718678b271cfdeb98f13ec11b4/lonaxijemazafijof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=aimbot+free+fire+hack+appPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/jelirirobonem.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_off000113ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113ED 10640 bytes
SHA-256: 70a7cede5aefab949c883f49d942be00f09b23bca98da9492ff88c1cfb9603e7
font_01_sfnt_off00012c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C1C 17628 bytes
SHA-256: ef9378f55452c56384606b28e5b8fe291b6f79f3259fe4c5197de950fd6ab0b8
font_02_sfnt_off00015aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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