Malicious PDF — malware analysis report

Static analysis result for SHA-256 54255eae8ff2208b…

MALICIOUS

PDF

82.6 KB Created: 2021-04-05 02:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cbca9d154f31dcb1c44b0affafc1587 SHA-1: c68f79d9c99bba6d6ca8d4710e945c1348155429 SHA-256: 54255eae8ff2208b05ddd4d974d680d4878ba8a2ac3aa9982ef23b6c8086afc8
154 Risk Score

Malware Insights

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

The PDF contains multiple invisible links designed to trick the user into downloading a payload. The primary malicious URL identified is https://mezovuduw.ru/wix?keyword=filmywap+2018+bollywood+movies+download+pagalworld.com. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojan-like behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=filmywap+2018+bollywood+movies+download+pagalworld.com
    • https://static.s123-cdn-static.com/uploads/4368251/normal_5fee30592e9db.pdf
    • http://xudeduda.iblogger.org/alexicom_aac_for_android.pdf
    • http://ruwufuwetoj.mygamesonline.org/cebuano_tagalog_dictionary.pdf
    • https://cdn-cms.f-static.net/uploads/4455658/normal_6011e4dc331b3.pdf
    • https://cdn.sqhk.co/goganededem/ibVLHja/video_status_download_punjabi_sad_song.pdf
    • http://bexowobiminefi.mywebcommunity.org/31182152668.pdf
    • http://wozilimesiz.mypressonline.com/data_analysis_in_social_research.pdf
    • http://tejidirexe.mywebcommunity.org/51464243663.pdf
    • https://cdn.sqhk.co/sunomedude/ttRjaaW/good_captions_for_fb_pictures.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/59433473-0adf-4c5b-b66d-656661bdb4b7/dyson_v11_animal_cordless_vacuum_cleaner__bonus_accessories.pdf
    • http://zigixukotezu.epizy.com/indoor_bird_aviary_plans.pdf
    • https://uploads.strikinglycdn.com/files/2657de30-5230-4d1f-b3a6-3d8ad4fa2557/20346879747.pdf
    • https://uploads.strikinglycdn.com/files/6a389020-ca2b-4998-9498-4888d949fbd5/zimabaguxenawefosoxav.pdf
    • https://uploads.strikinglycdn.com/files/0dab30fb-cc23-4140-9646-74e8655eadd4/stihl_battery_trimmer_and_blower_combo.pdf
    • https://uploads.strikinglycdn.com/files/7add3fc4-47e0-4958-aff8-7e81d821bd53/loxumuwomavekikovowemowe.pdf
    • http://bubobebetoju.rf.gd/sewexobejilu.pdf
    • https://uploads.strikinglycdn.com/files/3c79ff22-cb03-468f-9ac6-b77f9bfaef7d/mezagif.pdf
    • https://uploads.strikinglycdn.com/files/f9e73352-8c49-4b84-b540-2587a37920d2/babemo.pdf
    • http://gesesasogibigaw.rf.gd/hit_guidelines_ash.pdf
    • https://uploads.strikinglycdn.com/files/b2cd7cad-5d6d-44b9-8445-54cda9b22ea8/what_are_the_levels_of_care.pdf
    • https://uploads.strikinglycdn.com/files/07faf4a6-db36-4561-a88f-817aab4f5d03/kesunozasozameliwajozep.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebd4.bin
aa2ac8c769e0f73568fa0d3df7caa1bf0445474fc42d0a2c596e0a2c7ff607cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD4 6296 bytes
font_01_sfnt_off00010147.bin
3b8a1f9dac865e0e87c9b57d790815b92c5a47279baeb460845fa9bb0014142a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10147 11156 bytes
font_02_sfnt_off00012780.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12780 16092 bytes

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