Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07b1bbcf4514418…

MALICIOUS

PDF

79.4 KB Created: 2021-03-31 11:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 723bff62e88e7e11f1138efb176558a1 SHA-1: 71e7f8f817b9e77e4c527d37c7ff5a2b624628bc SHA-256: c07b1bbcf45144187b8979a6d51b1947063be793ff198622c321b4ac9fd7acdc
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Daedalus and Icarus' to entice users to click the external link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/award?keyword=daedalus+and+icarus+summary+pdf
    • http://gosoxegekiri.mywebcommunity.org/how_to_replace_troy_bilt_carburetor.pdf
    • http://devivitonewe.sportsontheweb.net/cetoprofeno_100mg_medley_bula.pdf
    • https://cdn-cms.f-static.net/uploads/4402737/normal_60473d8860608.pdf
    • https://cdn.sqhk.co/nilofixogezu/hfh3jdE/top_football_manager_2020_apk_download.pdf
    • https://static.s123-cdn-static.com/uploads/4455672/normal_5ff75b6773e18.pdf
    • http://retoxen.mypressonline.com/89784548597.pdf
    • https://cdn-cms.f-static.net/uploads/4465151/normal_5fd61ff301136.pdf
    • https://static.s123-cdn-static.com/uploads/4464527/normal_5ff4a6bad9a6b.pdf
    • https://cdn.sqhk.co/mixaluwekitu/Vgbw2hj/the_legend_of_sword_and_fairy_4_download.pdf
    • https://cdn.sqhk.co/xivomojuf/EjbdIgd/neon_on_miles_rd.pdf
    • http://kerutugizuxig.mygamesonline.org/cabelas_12_tray_pro_series_dehydrator_reviews.pdf
    • http://kuvuradivikosef.iblogger.org/35056949142.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jajoxutevo.epizy.com/nutricion_parenteral_definicion.pdf
    • https://17a6c5a8-0587-4adf-8126-5b439e15a62f.filesusr.com/ugd/54bec1_7761cd3672a44729b579200b1e2f7bb9.pdf?index=true
    • https://404c0e03-56c4-4888-bb84-d9d32a71a3e4.filesusr.com/ugd/100e2e_26f36997d2d445c18d146b3706a52bc8.pdf?index=true
    • https://434dcbc4-7bd9-40fe-99bf-e102daebf961.filesusr.com/ugd/07ef24_87649908396e43b69abd46ec8f337771.pdf?index=true
    • https://s3.amazonaws.com/pidufozu/color_theory_soccer_mommy.pdf
    • http://fefisapuvekebi.epizy.com/tegebuxukisosuli.pdf
    • https://s3.amazonaws.com/libusamagowuvo/suvabetatedikekoja.pdf
    • http://dakafatuvuguviz.atwebpages.com/tinabuvapotetel.pdf
    • https://4465b75e-e642-4f53-8c89-e22f0b9d4994.filesusr.com/ugd/ecd213_ca7b8ff5de2f44b1a4b4242d283f8fdc.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec67.bin
4d99e7b10604aeb84c5b82300f1543f42ad4bef5737c376db78dd77fd5bc52c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC67 5092 bytes
font_01_sfnt_off0000fda0.bin
b2e37a8a750686971defe9b85cfe676d44ff6fa4ab333c30ef468abc0efb50b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA0 10588 bytes
font_02_sfnt_off000121de.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121DE 4324 bytes

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