Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d2043d00a96c43…

MALICIOUS

PDF

78.9 KB Created: 2021-03-09 20:09:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dcb08fbe0ea56bd387a5fac864e2866 SHA-1: 76cadc1c154c99da9672fa8e45c2af407b465d4f SHA-256: 26d2043d00a96c43ee02b11e79dd3797fa42b38871a53a09e770ad18b4ec37ae
136 Risk Score

Malware Insights

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

The PDF contains heuristics indicating suspicious links and a high ML score for maliciousness. One heuristic specifically points to an image-heavy PDF with an invisible link to a suspicious domain, which is a common phishing lure. The embedded URLs suggest the document is designed to redirect users to malicious content, likely for credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://dafemum.ru/123?utm_term=meteo+campoformido+osmer
    • http://bosemefawixuwov.mypressonline.com/bose_companion_2_iii_watts.pdf
    • https://static.s123-cdn-static.com/uploads/4471092/normal_60094c4168f38.pdf
    • https://cdn.sqhk.co/segevenujuka/daje5HP/jonarilorodijemame.pdf
    • https://cdn.sqhk.co/pazaxefuma/uEaNjjZ/can_you_buy_on_ebay_with_paypal_credit.pdf
    • https://cdn.sqhk.co/gixobujikelu/Auyljdl/verizon_inside_wire_maintenance.pdf
    • http://loginwithfb.site/338742792hbdth.pdf
    • https://cdn.sqhk.co/xasexuwosul/ggpq3lo/jikudipom.pdf
    • https://cdn-cms.f-static.net/uploads/4387224/normal_602b35cc56f8b.pdf
    • https://cdn.sqhk.co/mixubiki/iija3Yz/24677713891.pdf
    • https://cdn-cms.f-static.net/uploads/4527164/normal_603a47d7c7426.pdf
    • https://cdn.sqhk.co/xajamenujo/ifAhbol/68745835397.pdf
    • http://rijeruzejolovo.22web.org/lavavinukotopotomenef.pdf
    • https://cdn.sqhk.co/kigowabalo/rmjcYxW/respawnables_online_pvp_battles_mod_apk.pdf
    • https://cdn.sqhk.co/kutajanode/Mjahhoe/73632009341.pdf
    • http://seamanygau.best/funofilewemufiwawa74ake.pdf
    • https://cdn.sqhk.co/tisewesir/co9gjhi/dumb_ways_to_die_2_game_online.pdf
    • http://pressit.fun/lilepukigabebavorix3b0u.pdf
    • http://muzibatixabu.mypressonline.com/jofotiliwesajivu.pdf
    • http://lapitubemexidi.mywebcommunity.org/89626679264.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://suvofaga.rf.gd/40567062399.pdf
    • http://bamonoxo.onlinewebshop.net/75568268848.pdf
    • http://kopolug.myartsonline.com/homedics_personal_portable_ultrasonic_cool_mist_humidifier_reviews.pdf
    • http://toratolobojede.rf.gd/dessert_restaurant_menu_template.pdf
    • http://ligeziwofumupo.epizy.com/75076884975.pdf
    • http://jawikaginixuxuz.rf.gd/ledojubox.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_off0000f561.bin
74d40be93d91a873086e05451fa5fa22c0d73979ed725342ff9dbbbf6cce2eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF561 5276 bytes
font_01_sfnt_off00010746.bin
615882b0f20fa550384dcf08c894d687db5074e7c091066a06c557a8c9093e3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10746 11000 bytes

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