Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3e23ea928d01fb…

MALICIOUS

PDF

115.9 KB Created: 2021-03-30 01:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c2d133112b58d2493703f71335a824e SHA-1: 11731817f5ee09462eff288fe34ffcbee3c8769d SHA-256: 4e3e23ea928d01fb22456944e8113ed8bc9665a8ffba00e6b3762c8a192413e8
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains numerous external links, suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest the document is designed to redirect users to potentially malicious websites for further exploitation or information gathering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/wix?keyword=ffxiv+uwu+predation
    • http://panivupod.22web.org/38047340154.pdf
    • https://cdn.sqhk.co/zuxatotukaru/egcJgdX/bazaxozimak.pdf
    • http://golosa-spasibo.ru/gospel_of_truth_valentinussisg6.pdf
    • http://agent-ritual495.online/hyundai_car_service_center_near_medavakkam98tf4.pdf
    • http://rewita.fun/9501213883dk7l0.pdf
    • https://cdn.sqhk.co/jujadiziga/tigif86/jbl_link_10_play_apple_music.pdf
    • https://cdn.sqhk.co/tavaxiwugo/yrhd0aI/66068461873.pdf
    • https://cdn.sqhk.co/solaxutom/XhjyBjh/forest_rescue_2_free_download.pdf
    • http://instapodarok365.site/diary_of_a_wimpy_kid_movie_the_long_haul_actorssmfb9.pdf
    • https://cdn.sqhk.co/jameleber/GjhXlic/afraid_to_shoot_strangers_tab.pdf
    • http://myfavoritesun.xyz/how_much_does_a_steel_frame_house_costx96jo.pdf
    • https://cdn.sqhk.co/janawezexoj/dgZREhf/football_fred_mod_apk_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://woxunegomuwajor.rf.gd/arduino_uno_programming_tutorials.pdf
    • http://nilikejavovop.rf.gd/dufimobinab.pdf
    • https://s3.amazonaws.com/jazamerijekufol/83355102562.pdf
    • https://9e705916-5bde-4eb8-be9b-8b3e910fbaf8.filesusr.com/ugd/c7a620_1941e10091b64476ac7e5b5c95aae077.pdf?index=true
    • https://s3.amazonaws.com/tugumeb/bivalek.pdf
    • http://vowukexakajan.rf.gd/55281731514.pdf
    • https://77a48bbd-706a-45f8-a225-ac1cc02029d7.filesusr.com/ugd/3be48b_2241db7279fe4768967defac063880de.pdf?index=true
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000168d7.bin
579d2a16b9958c3776c51f778640835c8dec7596940ea3cb121b3eaeaa8b62ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x168D7 4880 bytes
font_01_sfnt_off00017996.bin
2d3ef98d809efe5d97b9c6365df67e198fb05ffdbe5a78d3ed48f96eaab7bece		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17996 10512 bytes
font_02_sfnt_off00019dd0.bin
585033b6790375ba53bb793973a73fbe50adb591fe43975c7e94f0d3a7d341f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19DD0 16208 bytes
font_03_sfnt_off0001b30f.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B30F 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.