Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e2283281581bb0…

MALICIOUS

PDF

92.4 KB Created: 2021-09-05 00:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: fa38fe5bda62da1fba3f9015a9723ea3 SHA-1: e2df3c1798c7726e3bead8e80bd8f497d55afd55 SHA-256: 72e2283281581bb01afc07fc215f7f65f7c0c0062f19ef800c77a30e12fb0e38
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous URLs, many hosted on compromised or disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to exploiting PDF vulnerabilities or delivering malicious content via the linked sites. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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 http://usateatop.com/_upload/files/benemuwom.pdf In PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/d904bae2607d6837853eaa307367f9a5/zexapewapawudivawire.pdfIn PDF document text
    • http://tingchucontrol.com/Uploadfiles/files/55767660473.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/49dd390e9e3ca380d3a1f9d6033c459e/85511884943.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/46567020634.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/5640251694.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a624075fb67---47513735153.pdfIn PDF document text
    • https://iringmalaysia.com/ckfinder/userfiles/files/dotakoxitatu.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/b111097c0197f8d2a4692a77e16f3716/lizozevoloxogoxi.pdfIn PDF document text
    • https://keongracun.org/contents//files/dutunamimoxoromadurip.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/26bba2b62e9196760f35c77d69fc8c3a/kekakalopukedigozuwejezad.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607858fe538c6---45359451777.pdfIn PDF document text
    • http://urduhadith.org/survey/userfiles/files/radolugilos.pdfIn PDF document text
    • http://playeasypiano.com/resources/fck_images/devazedejikawevufebituxu.pdfIn PDF document text
    • http://dobrasekacka.cz/userfiles/file/fajilazezarupuxedetap.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092e8e018fea---67591986395.pdfIn PDF document text
    • http://goldenteriyaki.com/uploads/files/tukabuxo.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607abfdfe821c---sukivoza.pdfIn PDF document text
    • https://tidaksusah.com/contents//files/nosuxuw.pdfIn PDF document text
    • https://bunianco.com/other_files/File/9745336644.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/direluk.pdfIn PDF document text
    • http://mamnonkitty.com/webroot/img/posts/files/banupinatopota.pdfIn PDF document text
    • http://dissanna.com/temp/fckeditor/file/natororelavivafawabebina.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16200513403456.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=cnc+milling+programming+examples+with+drawing+pdfPDF 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_off0000fad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD6 21068 bytes
SHA-256: 42367736c0a2416ecb03bd72cda359eae7d9e010e9a646669535bba19028d8ff
font_01_sfnt_off000130db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130DB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000148f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148F2 11284 bytes
SHA-256: 4340709191a1b3b02e657d045d532c265bd1c778afa95f8e469e173aff0179c6

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