Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc70f8ccf65f0474…

MALICIOUS

PDF

67.8 KB Created: 2021-04-03 09:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d4c6df2aaae35bb07e60ec1fffe9934 SHA-1: 24d912557c33144fc24af703737beaa2dbcda6f6 SHA-256: dc70f8ccf65f04742590059992578c1f288025ca4829a7c723c59976a68bdc87
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/wix?keyword=pikachu+ears+hat
    • http://disupiwalu.mypressonline.com/wufoji.pdf
    • http://fastgetme.online/86315009729xy9ie.pdf
    • http://basiditdcf.space/nulaxodojasokufupiwzymo.pdf
    • http://robugipunebib.mygamesonline.org/maths_algebraic_formula.pdf
    • http://affilateapp.online/bill_evans_autumn_leaves_pianofgjwn.pdf
    • http://vegifeda.mypressonline.com/28471988013.pdf
    • http://vitodibiwanezej.mypressonline.com/a_christmas_carol_novella_study_guide_answers.pdf
    • http://wivuperafuzo.mypressonline.com/vewasinuxa.pdf
    • http://lipuwisapi.mywebcommunity.org/xonowemepo.pdf
    • http://dusipoweg.mywebcommunity.org/vutugigesivojolo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d0fd53c2-66a5-49f7-a942-a4bfc50892a3.filesusr.com/ugd/11baf9_23d0a5184ad5446ca55373a29f3bd0a5.pdf?index=true
    • http://minazefawubiso.epizy.com/2005_honda_civic_ex_owners_manual.pdf
    • https://uploads.strikinglycdn.com/files/1a9231c1-5720-4974-8029-3d42f4a704e1/cast_of_diary_of_a_wimpy_kid_manny.pdf
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_92dcdcccd98a4bba8b8f91d0b9add8d4.pdf?index=true
    • https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_27e2943424b54b33b406755563a748e9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fc84b01b-2674-497b-bdaa-2fe651a449ff/best_would_you_rather_questions_for_youth.pdf
    • http://pikubub.onlinewebshop.net/how_to_reset_plantronics_voyager_legend.pdf
    • https://50b7e5d6-ab0e-41ff-bbcb-47d024e5c277.filesusr.com/ugd/45d8ab_4cf39f9a4ff84cbdbe13caf470fdd134.pdf?index=true
    • http://mebubilatenizef.epizy.com/allowable_bending_stress_of_steel_sheet_pile.pdf
    • https://uploads.strikinglycdn.com/files/7bd83d9e-2fc5-4a0a-95dd-0680906530d9/88718427658.pdf
    • https://uploads.strikinglycdn.com/files/5923e4b1-1c40-4277-8eba-f90589ef1626/34612306155.pdf
    • http://dolojivek.onlinewebshop.net/58583465298.pdf
    • https://uploads.strikinglycdn.com/files/e534f9c2-74bc-43ec-ba4b-a2c30c1d27e6/brother_hl-6180dw_service_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc46.bin
50460a08f7339d04ae9ce729a9b96684b15e5442e7dbcad571ce86c42a405796		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC46 4920 bytes
font_01_sfnt_off0000dcfc.bin
3beba7a1e891357e194ad49d5acf032254f8dbd5c03bf4b8db108dfca10da086		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFC 10912 bytes

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