Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1213dee6b4d70c9…

MALICIOUS

PDF

84.3 KB Created: 2021-03-08 03:16:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48f400b8d43a92c07b8b1ff47ad16ddd SHA-1: b0cc34334b5f020893c35c87fcd3119deda5a355 SHA-256: b1213dee6b4d70c92a0fcadf4e39c0e75a4b9950e53184b006f1ab21f3c5747d
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=dojima+social+link+2
    • https://cdn.sqhk.co/vumajotiwog/iz7jcJJ/76230657786.pdf
    • https://cdn.sqhk.co/rozamulev/gejiiJd/41359010266.pdf
    • http://setomomenoku.22web.org/protein_extraction_lab_report.pdf
    • https://static.s123-cdn-static.com/uploads/4390383/normal_5fc6cee13b4ee.pdf
    • https://cdn-cms.f-static.net/uploads/4465003/normal_6042d813cf803.pdf
    • https://static.s123-cdn-static.com/uploads/4495684/normal_5fcd568ceb83a.pdf
    • https://cdn.sqhk.co/dedejosewor/Hhdhjhf/1696656566.pdf
    • https://cdn-cms.f-static.net/uploads/4456686/normal_5fe7d36b413a7.pdf
    • https://cdn.sqhk.co/vasozaponem/jbNKOeH/cat_professional_jump_starter_compressor_cj1000cp.pdf
    • https://cdn-cms.f-static.net/uploads/4417664/normal_601a860c9f61f.pdf
    • http://pabesubibo.66ghz.com/40580737557.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dufakukin.rf.gd/spotify_premium_free_trial_android.pdf
    • http://bolirazebaf.myartsonline.com/23990354897.pdf
    • https://uploads.strikinglycdn.com/files/30401479-4b56-4e86-8ad9-8d933a46d470/90607262241.pdf
    • https://uploads.strikinglycdn.com/files/8fd7d281-2b84-4c54-b661-74cceef47f71/what_is_the_synonym_of_progressive.pdf
    • https://uploads.strikinglycdn.com/files/7657c29d-e508-40ad-96bb-66cd421c844f/62508270670.pdf
    • http://tonavisuma.onlinewebshop.net/h81m-e33_usb_3.0.pdf
    • https://uploads.strikinglycdn.com/files/34a6e6e0-f392-47b8-adef-1bb99b708885/64987611917.pdf
    • http://xisajegaxije.epizy.com/dante_inferno_summary_canto_5.pdf
    • https://uploads.strikinglycdn.com/files/80a15981-d6df-4f35-a230-c3c44be03b20/80313207049.pdf
    • https://uploads.strikinglycdn.com/files/2ccd20f7-3dec-48e1-859b-dc364e52b558/34973840403.pdf
    • http://tososite.onlinewebshop.net/where_to_buy_a_timex_watch.pdf
    • https://uploads.strikinglycdn.com/files/3bf42ff4-e960-45cf-add8-1838cdee5942/examples_of_literary_devices_in_i_have_a_dream_speech.pdf
    • http://refusunono.onlinewebshop.net/program_directv_rc66_remote_to_receiver.pdf
    • https://uploads.strikinglycdn.com/files/437e1b8c-e4db-443b-9ad6-fc5e6698cd1e/22086214538.pdf
    • https://uploads.strikinglycdn.com/files/cf1b75cb-38e2-497c-99d4-38b0169c0b22/vojowemeziku.pdf
    • http://roragopijejem.epizy.com/homer_the_odyssey_summary_in_hindi.pdf
    • http://nixomirorubu.myartsonline.com/call_of_duty_modern_warfare_beta_dates.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec44.bin
c19cda89bdb56e04507ade8213b0caeee5422e916832ef76514ae5c4aa3f021b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC44 4712 bytes
font_01_sfnt_off0000fc24.bin
fa7ac4941dda926589786405262fd40c04cc514e7822be50b5d2bd33a5292e21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC24 10332 bytes
font_02_sfnt_off00011f8d.bin
281214d1119d96f3a8ebe36682ff3c94e77595198e0ed7d049f81fad77dcdf11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8D 16240 bytes
font_03_sfnt_off000134e6.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134E6 4324 bytes

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