Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2d156e1d926350…

MALICIOUS

PDF

77.8 KB Created: 2021-03-17 17:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6222c624adcfda6b71b77454ac03ed62 SHA-1: 9031d6f1ef5dbd843c5273bf2d1e12768b8c8c10 SHA-256: ff2d156e1d926350c7cf399849d60bf66b2e8f72adc570b6f837d77c6488d83e
96 Risk Score

Malware Insights

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

The file is a PDF document that contains numerous embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/strik?utm_term=electric+pressure+cooker+repair
    • https://cdn.sqhk.co/kipebakebe/jbgDiep/airplay_apk_tv.pdf
    • https://wagizubim.weebly.com/uploads/1/3/4/4/134470033/nejuzisavugate_vosawe.pdf
    • https://cdn.sqhk.co/xidafigutoxa/gjifhab/beamng_drive_crash_death_stair_car_crash_simulator.pdf
    • http://sportplays.ru/cosmos_neil_degrasse_tyson_season_22rgsf.pdf
    • https://cdn.sqhk.co/pefisemise/fhgfzoS/govofa.pdf
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/1389313.pdf
    • http://xifadezuzurap.medianewsonline.com/color_by_number_halloween.pdf
    • http://pasikufopubiwo.mypressonline.com/xinaf.pdf
    • http://mjawebdesign.net/rupafupejelas05bt.pdf
    • http://insurancecarusa.com/fujitsu_scansnap_ix500_wia_driverxcth5.pdf
    • https://wowemaba.weebly.com/uploads/1/3/1/3/131380083/8627916.pdf
    • https://ladunibik.weebly.com/uploads/1/3/4/0/134096621/2f8955c5.pdf
    • http://copyrightreports.com/dafawefidolixamatnwzyl.pdf
    • https://cdn.sqhk.co/bidogefapo/fDwjTGw/hoppy_frog_2_mod_apk.pdf
    • http://nanebaxexob.getenjoyment.net/mcdonalds_coupons_october_2020.pdf
    • http://torchqbfl.fun/jukarozodevufikoxamsj8fw.pdf
    • https://cdn.sqhk.co/wugunifikezu/c7gdhhM/10115743929.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8964868a-aef6-4da0-9a9b-29de7c28e0c5.filesusr.com/ugd/b910ae_af6e8fca67be4c05bfa27ef4819d7978.pdf?index=true
    • http://bifovigavij.myartsonline.com/paul_krugman_and_robin_wells_macroeconomics_4th_edition.pdf
    • http://senesijosezetu.myartsonline.com/what_happens_in_after_we_fell.pdf
    • https://eee7329a-c4d5-4508-a8fd-a8ba515f7d9f.filesusr.com/ugd/5ed802_47c60a087f714e17b13cc3016015ec95.pdf?index=true
    • https://4bc473c2-84d0-4913-8b4e-281bf44fba2e.filesusr.com/ugd/a25dbd_6c404817f5b240f98261c1befecfcd9d.pdf?index=true
    • http://kugukokoner.myartsonline.com/joketanuninenamefezuzurax.pdf
    • http://zatuvejamubolo.atwebpages.com/vulopufubiluwavir.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_off0000f284.bin
d79b0a046de956907a3937306b1442aaed7c1b803bc4aae96a5cc3458172bd96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF284 4948 bytes
font_01_sfnt_off0001036d.bin
71c8d2f198827daaa923de9b40ef602675c07d2d4fcedde6f51c4f17b1433a1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1036D 11448 bytes

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