Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5fba7166d5d5d6a…

MALICIOUS

PDF

188.3 KB Created: 2021-03-24 10:54:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf9318f440393e94c9ecc6c770c2fc00 SHA-1: efb0baaedb8fb4cf82b227572da79914c5be756e SHA-256: f5fba7166d5d5d6a7cc58d40400688b6fb2e839d7a82673ef3084bf72154f10b
136 Risk Score

Malware Insights

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

The sample is a PDF document that uses a lure related to Arnold Schwarzenegger's workout plan to entice users. It contains an external URI pointing to a suspicious domain, indicative of a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to an advance-fee scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://pelibifir.ru/award?keyword=arnold+schwarzenegger+workout+plan+pdf
    • http://duzixofiwisegi.mygamesonline.org/arithmetical_reasoning_tricks.pdf
    • https://cdn.sqhk.co/jexumumir/jfjgjgo/the_amityville_horror_full_movie_480p.pdf
    • https://cdn.sqhk.co/nokulebepoba/9jejigc/didepe.pdf
    • http://dadevizevarek.scienceontheweb.net/rizipot.pdf
    • https://cdn.sqhk.co/buvaboda/jYEBiaI/91937779841.pdf
    • https://cdn.sqhk.co/kugefiruxat/jaIrif0/72563844853.pdf
    • https://cdn.sqhk.co/pakebisas/j7ZtQha/70045962796.pdf
    • http://xazapefunel.getenjoyment.net/xirene.pdf
    • http://vuzetasavuxoso.mygamesonline.org/91594362951.pdf
    • http://vegifeda.mypressonline.com/72320455602.pdf
    • http://xedeporib.medianewsonline.com/tubuvilevugazubop.pdf
    • http://rolivazugatar.scienceontheweb.net/cerebral_circulation_physiology.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://livirava.atwebpages.com/76479352762.pdf
    • http://pibumox.rf.gd/my_abc_book.pdf
    • http://zomusuxine.rf.gd/jopulesarunugu.pdf
    • https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_693567bf9ec04bb59a7fefca4b2c6e87.pdf?index=true
    • http://zakefuki.myartsonline.com/49363205787.pdf
    • http://titasukutisun.epizy.com/47551243595.pdf
    • http://wonanikapudidak.atwebpages.com/fufifudu.pdf
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_94e8d107161344db80fcc8373d8db3ca.pdf?index=true
    • http://wejufutaz.onlinewebshop.net/panuvifafamimaxedavefuban.pdf
    • https://74df6fe0-557b-4e47-8461-f2df536053d0.filesusr.com/ugd/4dcf4e_038d7ebbc7174857a54499995cacc670.pdf?index=true
    • http://kunubuxeduw.epizy.com/maresofizizezaderixolomal.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_off00029e8d.bin
8ca65f03b956b33c5fc334cfc3e65b4f2d049bf1d12fcb2ccc01c3dac6a4d23f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29E8D 5612 bytes
font_01_sfnt_off0002b1c7.bin
3562aebca220070ee9dac653e61bfa4412a6120fd9b65e3576ffd158801defe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1C7 15984 bytes

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