Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af0494a753c672c…

MALICIOUS

PDF

83.5 KB Created: 2021-09-15 23:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: fa98ac6ead79c56b79bc89cdac4d27ed SHA-1: 60e5b564a554ba3b242a1120a50b8dd9a2f62d89 SHA-256: 9af0494a753c672cad75afbf790cf34570884fcfec13f164e6b546fe1589e17a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan PDF. It contains a link farm with numerous URLs, many hosted on disposable domains or compromised CMS uploads, designed to redirect users to malicious sites. The PDF structure and embedded links suggest an attempt to trick users into visiting these sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://cnsgafgl.netsociality.com/upload/files/71342859734.pdf In PDF document text
    • http://p-energo.ru/content/file/58200652156.pdfIn PDF document text
    • https://mpksieradz.pl/upload/file/boxizuwadolilidudaxibep.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614080f8de068---pupizotiw.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f330a2b47---zabuvarabazipobewijotu.pdfIn PDF document text
    • http://homokkepek.hu/editor_up/67266966383.pdfIn PDF document text
    • http://softtox.pl/new/userfiles/file/wafodevulazif.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/44726761519.pdfIn PDF document text
    • http://tahi.hu/ckfinder/userfiles/files/75997977479.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613d890072abb---nasufuretesegupiwawosej.pdfIn PDF document text
    • https://hnhaa.com/userfiles/tnejp/files/mufefu.pdfIn PDF document text
    • https://umiyawoodworks.com/fckdb/userfiles/file/64998988455.pdfIn PDF document text
    • https://debden.org/userfiles/file/In PDF document text
    • https://all-new-wow.com/upload/files/lixubisafatebesurilufo.pdfIn PDF document text
    • http://midoriku.zaitakunet.jp/app/webroot/upload_images/files/69571841786.pdfIn PDF document text
    • https://tempegaring.com/contents/files/11989235505.pdfIn PDF document text
    • https://www.educazionesessuale-scuola.ch/ck/ckfinder/userfiles/files/jisafaduwoxegejopaf.pdfIn PDF document text
    • https://stealthwindow.tw/uploads/files/202109031451144975.pdfIn PDF document text
    • http://health-bridge.in/upload/file/palujidotijasitolowir.pdfIn PDF document text
    • http://khiensa.com/UserFiles/File/12436110750.pdfIn PDF document text
    • https://jucariicopilasi.ro/app/webroot/files/userfiles/files/xelelefuk.pdfIn PDF document text
    • http://morakothotel.com/file_media/file_image/file/40166338476.pdfIn PDF document text
    • https://guclupin.com/calisma2/files/uploads/87455388094.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=cinema+streaming+freePDF 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_off0000e2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A9 18092 bytes
SHA-256: 2e05723b90abf82e96ab3aa7e0bce9eeb861dbb10b5845b7fa7737cd4a967653
font_01_sfnt_off0001116f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12986 10420 bytes
SHA-256: ba12cd4c4317b5365fbc904721da631ccf2f7fbed5b4cc85cb9d45ad83e5a925

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