Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea900a2d5b7fb240…

MALICIOUS

PDF

155.1 KB Created: 2021-03-23 07:32:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efb762309dc6144ab6fb831ceff1f2ec SHA-1: 767227be208af2493314079e4f57acfd7922d53f SHA-256: ea900a2d5b7fb24086cbdf47c1c0e4e26707c87d550560f40083ff8b2ac2fe7b
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs that lead to external websites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection point towards a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://golowaki.ru/wix?keyword=martin+logan+motion+40+review+stereophile
    • http://alcozerox.com/gonadil_f_use_forwgu6e.pdf
    • https://tujarabevazedi.weebly.com/uploads/1/3/4/2/134235746/sigameju.pdf
    • https://wixuzezokanozav.weebly.com/uploads/1/3/4/6/134663812/nujakadoji-degemufile.pdf
    • https://pakajifovajopif.weebly.com/uploads/1/3/1/6/131607230/lofawimexubepenonabi.pdf
    • http://nakozek.mypressonline.com/atlas_copco_screw_compressor_troubleshooting_guide.pdf
    • https://bipikive.weebly.com/uploads/1/3/4/3/134342269/c521413d4.pdf
    • https://komidozikozapuf.weebly.com/uploads/1/3/1/4/131455883/f3eafd.pdf
    • http://terem.space/aisc_design_guide_for_base_platesm11tj.pdf
    • https://galixasuja.weebly.com/uploads/1/3/4/5/134518214/5dc3d9ab9a9f458.pdf
    • http://wojidibotetim.22web.org/bartholinite_cours.pdf
    • https://gabinomila.weebly.com/uploads/1/3/4/7/134763369/linigonasak.pdf
    • http://zunuruxeguxifi.mygamesonline.org/bio_data_form_format.pdf
    • http://dayzcommunity.info/how_many_seasons_does_tokyo_ghoul_have_in_2020gi2i2.pdf
    • http://aarbuz.space/movie_trivia_quiz_sporcle97yok.pdf
    • https://xoxumowuna.weebly.com/uploads/1/3/5/9/135964844/290ad0a45.pdf
    • https://buporinedo.weebly.com/uploads/1/3/4/0/134041533/9414583.pdf
    • http://wegoradubi.sportsontheweb.net/58371322818.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xewowetakefov.rf.gd/que_es_un_proyecto_de_investigacion_cientifica.pdf
    • https://uploads.strikinglycdn.com/files/bb86a8be-d040-45c7-9230-a4e2dffa4074/80410628444.pdf
    • https://uploads.strikinglycdn.com/files/15840360-1f05-48de-ae97-cbcd7e829561/77801283301.pdf
    • https://uploads.strikinglycdn.com/files/1e833e19-5093-43e3-82c1-a7bed875b6c1/inferno_dante.pdf
    • https://uploads.strikinglycdn.com/files/d9a0fcbd-0044-4a42-8968-efbf10638900/molawugilarefaruwolib.pdf
    • http://wujawejibizub.epizy.com/jeep_wrangler_service_manual.pdf
    • http://tefuguwo.epizy.com/setipuvaja.pdf
    • http://rosukijabadizi.epizy.com/tenik.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_off00020835.bin
856b50181a2b933799b95d3e8d5a90ea3b9ef9371fab11b162b7889a949ad160		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20835 5620 bytes
font_01_sfnt_off00021b4b.bin
e455e3980cd52666875c0e68a7fa0d3974823b58674c14bdcc48356d29e2d769		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21B4B 13604 bytes
font_02_sfnt_off0002498f.bin
9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2498F 16036 bytes

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