Malicious PDF — malware analysis report

Static analysis result for SHA-256 258fe0299246f965…

MALICIOUS

PDF

237.0 KB Created: 2021-03-18 01:37:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60817d257ff80e26a01a61a53b29568d SHA-1: 55555357b8000b13814e438c49282e767fb403ee SHA-256: 258fe0299246f9657429a43d23cffb3d4669ccf5dce2fcbec3c4015d9bc7dee4
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with the primary one being `https://zajinet.ru/wix?keyword=d%2526d+3.5+e+artificer+guide`. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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=d%2526d+3.5+e+artificer+guide
    • http://rufawefojag.sportsontheweb.net/ashraful_hidaya_urdu.pdf
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/3959ec452d234.pdf
    • https://fibupodofakakov.weebly.com/uploads/1/3/4/4/134496100/e3c9ba07927.pdf
    • https://cdn.sqhk.co/bemaxopig/ehdoide/29736033935.pdf
    • http://somixewavado.sportsontheweb.net/48023077741.pdf
    • https://kifewuwumezoduk.weebly.com/uploads/1/3/4/7/134740170/jidefapajutod_kakaxavowanuw_jorasinawovunu.pdf
    • https://betisifi.weebly.com/uploads/1/3/1/4/131438474/2228219.pdf
    • http://fakixigulidol.mywebcommunity.org/41102339949.pdf
    • https://cdn.sqhk.co/jalosemuv/3ihji40/48521294584.pdf
    • http://jubisadamafav.22web.org/how_to_light_a_weber_smokey_mountain.pdf
    • https://static.s123-cdn-static.com/uploads/4369629/normal_5fddb2f3d17c3.pdf
    • http://kujunat.medianewsonline.com/libro_angeles_y_demonios_gratis_en_espaol.pdf
    • https://static.s123-cdn-static.com/uploads/4459034/normal_5ff6684450889.pdf
    • https://cdn-cms.f-static.net/uploads/4452157/normal_604feea0e3125.pdf
    • http://tesugujinarijag.mywebcommunity.org/calendar_with_holidays_2020.pdf
    • https://nuxowodevuj.weebly.com/uploads/1/3/4/6/134609076/dubibokofujo.pdf
    • http://fajasated.mywebcommunity.org/flight_of_the_bumblebee_cello.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tiwatimab.atwebpages.com/vimixoxomovebatun.pdf
    • http://pemukusa.epizy.com/guideline_diabetes_2019_ada.pdf
    • http://vujapaporetakik.epizy.com/a_dolls_house_critical_analysis.pdf
    • http://tefesapebeto.rf.gd/kiderukosatedib.pdf
    • http://tofujuwo.onlinewebshop.net/jiwizopaz.pdf
    • http://kofaxafogi.myartsonline.com/19909894867.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd39.bin
83010485458536fc0aa0f2e9a4fa553ab3d2f1262dc26a7fc74e62081f30019c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD39 211852 bytes
font_01_sfnt_off00036a36.bin
d9d9eb8b5a67a8494ca5a9593d54773c41ba913a17cb426b52e0a193c0b11448		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36A36 4156 bytes
font_02_sfnt_off00037864.bin
bbbe1bdf0048676113242730c7d5c0e7b7eb0b64e596330158c00bb680213073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x37864 13604 bytes

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