Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2e2339ae287215…

MALICIOUS

PDF

77.4 KB Created: 2021-02-22 18:20:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: bacc48f36df99218518898bba18236f3 SHA-1: 368d7a6f08ee3032d513b9497db99dd14e94c985 SHA-256: 5c2e2339ae2872151fae898575d109ab5b12de04e43a3fa290f657280981f22b
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is disguised as a movie download. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded link likely leads to a phishing page or a second-stage malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=sherlock+holmes+movie+download+in+tamil+isaidub In PDF document text
    • http://nutristrike-shop.ru/galaxy_3d_live_wallpaper4m0aa.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/iadvhgB/chinese_checkers_strategy.pdfIn PDF document text
    • https://cdn.sqhk.co/tesikotuk/tAbHQgg/suxarata.pdfIn PDF document text
    • http://rakajipof.22web.org/bypass_proxy_android_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/kifuzopeko/4pdGT3O/set_wheel_size_bike_computer.pdfIn PDF document text
    • https://cdn.sqhk.co/wareberefiz/ijhibDJ/47213597537.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/ggcGigg/49904250726.pdfIn PDF document text
    • https://cdn.sqhk.co/vevajewez/hap0hdn/hopper_recipe_minecraft_1._14_4.pdfIn PDF document text
    • https://cdn.sqhk.co/dilizilozok/fbu3vhd/sunekuxefumariw.pdfIn PDF document text
    • https://cdn.sqhk.co/pekobenew/c2dfBpZ/raft_survival_forest_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379241/normal_6021602b86167.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/falenofujopejap.pdfIn PDF document text
    • http://baniginoso.epizy.com/geometry_book_answers_chapter_3.pdfIn PDF document text
    • http://muzasikogebew.rf.gd/pantalla_atvio_32_pulgadas_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/21342010832.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/anti_wrinkle_cream_reviews_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/mergers_and_acquisitions_2018.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF3 5640 bytes
SHA-256: f264e2b919b3bb1d6b0f61e18aa1fc4414627160d1731a2ce6fb7376f0e6a6aa
font_01_sfnt_off0000e200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE200 2656 bytes
SHA-256: c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde
font_02_sfnt_off0000ed08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED08 11128 bytes
SHA-256: a897967af5d176453bfd3c9f8b91e7d892ed9b44f8428c978c05ee8193ba00de
font_03_sfnt_off00011338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11338 16028 bytes
SHA-256: 0bae8649ba252bcfab81cb8324cfe1737d73e47191b507e117e6d0858e0066a8

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