Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda1adf3f0a4a260…

MALICIOUS

PDF

82.0 KB Created: 2021-04-06 08:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 9e6bf18180b99a191519726e7343be97 SHA-1: 5ad234a9733f03defe6bc008155b518cae7d4ef4 SHA-256: dda1adf3f0a4a2601de8f07ca26a6c1d2a6d64c26e71424ba267c70dd11b9f7b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the presence of external URIs and the overall structure point towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/award?keyword=bacterial+leaf+blight+of+rice+pdf PDF link annotation
    • http://miwasigal.mywebcommunity.org/abu_garcia_black_max_combo_academy.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/64653191383.pdfIn PDF document text
    • http://fosireditoj.mygamesonline.org/tapani.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/aspiracion_de_secreciones_bronquiales_procedimiento.pdfIn PDF document text
    • http://woxijakuzadajew.getenjoyment.net/98532138199.pdfIn PDF document text
    • http://wimudevereru.sportsontheweb.net/calabash_fruit_health_benefits.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/samsung_un32n5300afxza_32_inch.pdfIn PDF document text
    • http://judupebe.getenjoyment.net/catalogo_bisagras_para_soldar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nibizuladode.onlinewebshop.net/kimotumunen.pdfIn PDF document text
    • http://rufejawat.epizy.com/49010124499.pdfIn PDF document text
    • http://rubuzefugunu.epizy.com/network_guide_to_networks_textbook.pdfIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/56086066820.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/libajajen.pdfIn PDF document text
    • http://fozozip.onlinewebshop.net/89925463040.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/irish_graduation_blessing.pdfIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/mipufaribopapikerilaxixe.pdfIn PDF document text
    • http://jiguteduvuvuxa.rf.gd/46553307842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/550bf1c3-6ecd-4efc-a477-7e1860f17441/90790968889.pdfIn PDF document text
    • http://xatofobimuxu.rf.gd/tiwokafis.pdfIn PDF document text
    • http://jitawidavez.atwebpages.com/periodic_table_download_free_in_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b3ec963-7fc2-4701-b519-503dc4f56b7b/73412853421.pdfIn PDF document text
    • http://tagijonegularol.myartsonline.com/vinenepunekenasogowu.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10022 5428 bytes
SHA-256: 8fdbcaea87c7346c901f41c0da8018692012ddbce958f750f58ef23d1ffa87dc
font_01_sfnt_off0001128a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128A 11272 bytes
SHA-256: bfb4676de0b28d3896a97f601c5b513df6a5ad9b133b82b5319fb2c0a1356ad8

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