Malicious PDF — malware analysis report

Static analysis result for SHA-256 5660b1ed2dee5615…

MALICIOUS

PDF

87.1 KB Created: 2021-03-05 23:00:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56132ed27aea668e9b11d531b5797655 SHA-1: 7bf21d9fea8fdb4ec643aba60683fa1b14ee1e01 SHA-256: 5660b1ed2dee561548fa30b0445876d9b9b1e487a514ee42f1b86cf4ce2f7659
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'zajinet.ru', which is likely a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of the URL suggests an attempt to redirect the user to a malicious resource, possibly for downloading further malware or phishing for credentials. No scripts were extracted, but the PDF structure itself facilitated the embedding of the malicious URI.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/wix?keyword=cetusplay+apk+no+ads
    • http://kotexob.iblogger.org/55520884568.pdf
    • http://nomudepalak.medianewsonline.com/ledesosofitovof.pdf
    • https://bupafenanibud.weebly.com/uploads/1/3/4/0/134042845/4242185.pdf
    • https://kasorewo.weebly.com/uploads/1/3/2/7/132740312/715d04.pdf
    • http://dorulezebum.sportsontheweb.net/36599750927.pdf
    • http://jugatilewe.22web.org/how_to_change_battery_toyota_corolla_2009.pdf
    • http://gojawufeki.getenjoyment.net/mitsubishi_mr_slim_stopped_working.pdf
    • https://pojalizug.weebly.com/uploads/1/3/4/5/134591246/nulazugojotepuzu.pdf
    • https://dexuganepo.weebly.com/uploads/1/3/1/6/131608037/73e291a72754.pdf
    • https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/0045e75223e7e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gifiz/catalogo_avon_campaa_11_2019_mexico.pdf
    • https://s3.amazonaws.com/pisik/eraser_online.pdf
    • http://zujozovasa.rf.gd/plain_brochure_template_microsoft_word.pdf
    • https://s3.amazonaws.com/zuniverijesud/92148733872.pdf
    • http://nujafosedoke.epizy.com/76616163404.pdf
    • http://nabowiruxurupob.rf.gd/bmj_case_reports_images_in.pdf
    • https://s3.amazonaws.com/wujodibu/how_long_does_loreal_feria_hair_color_last.pdf
    • https://4a5bfc55-71df-4474-8f3e-9f6aca65c64b.filesusr.com/ugd/29b6ce_159881806c1a4dc98d1437bc85e93aa7.pdf?index=true
    • http://timavutiziv.epizy.com/vegefanenut.pdf
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_b1023efb95314287917ffc264f34a266.pdf?index=true
    • http://bividit.rf.gd/84841901814.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7b1.bin
d0e2226ba5376bb94a69a728bad8c290052c04e6fbf0f8d60626161e11db4e29		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B1 4928 bytes
font_01_sfnt_off0001088f.bin
b60135557a803d4788dafb4b7bfe070477819bcaedf6a74a7a9d4db06e26d0ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1088F 16036 bytes
font_02_sfnt_off00013a3f.bin
bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A3F 16060 bytes

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