Malicious PDF — malware analysis report

Static analysis result for SHA-256 48bd54fadafd4ba5…

MALICIOUS

PDF

84.7 KB Created: 2021-04-06 19:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5b902bbdbdc8703ac9e3cb62519df5c SHA-1: d2949e1c236c65e7af91676c09bd98c0b36f4c10 SHA-256: 48bd54fadafd4ba531ce43ce1a2daddbd2c53fb52e8c5df0f6940432ae938fb0
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a URL that appears to be a phishing lure. The document body, though heavily obfuscated, suggests a search result context. The presence of multiple unknown reputation URLs further supports a malicious intent, likely to redirect the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/award?keyword=arabisch+schreiben+lernen+%25C3%25BCbungen+pdf
    • http://xuwuvewisin.mypressonline.com/fawadowopeninawuwuvogoso.pdf
    • http://kurametugugu.mygamesonline.org/the_aquariums_of_pyongyang_free.pdf
    • http://kidufamipowanot.mywebcommunity.org/79043119416.pdf
    • http://poposiruta.mywebcommunity.org/what_to_write_on_verification_of_property_condition.pdf
    • https://static.s123-cdn-static.com/uploads/4376612/normal_6005e65b17357.pdf
    • http://dejijesumewir.22web.org/what_is_the_story_of_the_maze_runner_series.pdf
    • https://static.s123-cdn-static.com/uploads/4407299/normal_5fcd8dc71542e.pdf
    • https://static.s123-cdn-static.com/uploads/4387408/normal_5ff0dd3f3dfd5.pdf
    • http://xiwakaravivomik.scienceontheweb.net/47617286294.pdf
    • https://cdn-cms.f-static.net/uploads/4408335/normal_601d31ae91137.pdf
    • http://jerunurijo.iblogger.org/91406044762.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://terumalok.atwebpages.com/16332939640.pdf
    • https://s3.amazonaws.com/kaxukok/hotstar_app_for_pc_10.pdf
    • https://s3.amazonaws.com/pazovugal/what_does_it_mean_when_my_gmc_acadia_says_service_battery_charging_system.pdf
    • http://fitunugiwa.rf.gd/xaledeloli.pdf
    • https://s3.amazonaws.com/xifabilejilab/63224710897.pdf
    • http://nezugetojuf.myartsonline.com/85532292618.pdf
    • https://s3.amazonaws.com/pusolefosex/granny_mod_menu_apk_1._6._1.pdf
    • http://ladisopezaxak.epizy.com/74201535019.pdf
    • http://zesafemumibow.myartsonline.com/arifureta_shokugyou_de_sekai_saikyou_web_novel.pdf
    • http://labapok.rf.gd/commas_worksheet_grade_4.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e539.bin
15b270a666d10ac145486b0cf7e1eb9401e43ed1aab756444361b61dc8b1e3a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE539 5356 bytes
font_01_sfnt_off0000f722.bin
a633c08926dbe7ffbcfbb235d28903ee3f2f85ceebda6fc58dcd6766c2b68e51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF722 11240 bytes
font_02_sfnt_off00011c6b.bin
b61242e5605f2c76095c41f000874a7c76ec073a8309ae73b1b769e644944c04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C6B 17280 bytes
font_03_sfnt_off000134a3.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134A3 4324 bytes

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