Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec94b2c7755cf69…

MALICIOUS

PDF

98.7 KB Created: 2021-03-30 22:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 5474212f522d109e9b24c3baf14822b1 SHA-1: 5c96ddfa112d3b98af22245ce245c3ef6032565f SHA-256: 0ec94b2c7755cf69dbfa9a4a779f188aff6595244ab401691fa51c0d6bbc24cb
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure, likely delivered via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://gimoguvi.ru/wix?keyword=pokey+mario+video PDF link annotation
    • https://cdn.sqhk.co/fiwujumejuf/tTChehf/sujijinogonenuragesiwune.pdfIn PDF document text
    • http://bigakeka.iblogger.org/ionic_generate_apk_play_store.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/bsbygiR/bts_twitter_logo_copy_and_paste.pdfIn PDF document text
    • https://cdn.sqhk.co/momajuxu/5gigq1r/fim_scores_cheat_sheet_occupational_therapy.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/0TyIggr/ocoee_florida_pronunciation.pdfIn PDF document text
    • https://cdn.sqhk.co/datagemop/dzAMjii/universe_sandbox_online_demo.pdfIn PDF document text
    • https://ginufadep.weebly.com/uploads/1/3/4/6/134668932/foselupufirogiv.pdfIn PDF document text
    • https://tumogifizutuvo.weebly.com/uploads/1/3/4/5/134527103/aa5792d29a.pdfIn PDF document text
    • http://figopevevalid.iblogger.org/81769827580.pdfIn PDF document text
    • https://bugagage.weebly.com/uploads/1/3/5/3/135330359/guvuvaluf_wutamuj_mumafarigojidup_fabojizaga.pdfIn PDF document text
    • https://wesotapaxo.weebly.com/uploads/1/3/4/4/134488604/a8148b2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bupukulepunaz.rf.gd/68816452891.pdfIn PDF document text
    • http://mevomum.epizy.com/66797344812.pdfIn PDF document text
    • https://3dbd840c-7861-42b4-b064-af52d1d2f4eb.filesusr.com/ugd/86319b_adf5557002be4b96be978a04de2f83dd.pdf?index=trueIn PDF document text
    • http://zagopemolal.rf.gd/how_to_restore_an_old_royal_typewriter.pdfIn PDF document text
    • http://butasolijedaj.rf.gd/40124002821.pdfIn PDF document text
    • http://tituzirafosexi.epizy.com/83720154612.pdfIn PDF document text
    • http://movafomuwexowix.epizy.com/moviescounter_free_2019.pdfIn PDF document text
    • http://rewojemod.rf.gd/mapipipexosexowi.pdfIn PDF document text
    • http://farilofisimoru.rf.gd/martin_luthers_commentary_on_the_book_of_romans.pdfIn PDF document text
    • http://kuzojepume.epizy.com/29331337379.pdfIn PDF document text
    • http://tawadamaripiz.rf.gd/manuale_officina_mv_agusta_125_tr.pdfIn PDF document text
    • http://tujigukaxez.rf.gd/99521118657.pdfIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_130d01a164484c97b57d4dfee2f9e3be.pdf?index=trueIn PDF document text
    • http://butojidinogulab.rf.gd/how_many_points_do_parallel_lines_have_in_common.pdfIn PDF document text
    • http://tovivefi.rf.gd/37851797101.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_off000142e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142E3 4988 bytes
SHA-256: 0daf0f9b55ded7526efc45a022b754c7e362f57e088b5b9291b5448baeea9d09
font_01_sfnt_off000153d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153D0 11852 bytes
SHA-256: e9337bc0901b34cbaa6aa7d946e24dfdeb210a079d665db1f0f95e1be18264e8

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