Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad5a16ab691fbe0…

MALICIOUS

PDF

80.4 KB Created: 2021-03-25 15:13:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36879a7eb1fb19ed51e579987a208260 SHA-1: e976c107432226c4fe9570a42145a2bfe7ef9381 SHA-256: 1ad5a16ab691fbe02b708584de4312a47f04806d9d83f98491d7751a9db42e90
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 URI pointing to a suspicious URL, likely intended to deliver a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to contain text related to a manual, suggesting a lure to trick the user into interacting with the malicious content.

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
  • 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://pelibifir.ru/wix?keyword=air+o+swiss+manual
    • https://cdn.sqhk.co/libarazituw/fUihmCb/mexican_ice_cream_shop_near_me.pdf
    • https://cdn.sqhk.co/losajaro/njfgiji/77806357231.pdf
    • https://cdn.sqhk.co/rizonozugaj/eKShdgi/aerox_155_harga_2020.pdf
    • https://cdn.sqhk.co/gadewekunel/DvToicx/34719138600.pdf
    • http://fodefon.getenjoyment.net/conair_hair_clipper_guard_sizes.pdf
    • http://nikibolerobika.getenjoyment.net/suwamobetikabivefizufek.pdf
    • https://cdn.sqhk.co/mivadunoxo/hggdNib/formula_1_2020_start.pdf
    • https://cdn.sqhk.co/danopefasuf/6zAB5z9/tufuto.pdf
    • https://cdn.sqhk.co/robimovule/vshjrQ4/i_love_crosswords_3_level_13_answers.pdf
    • https://cdn.sqhk.co/ramawuvade/7jcghha/xenodepomefovefovo.pdf
    • https://cdn.sqhk.co/kadeposamo/jfZjb1b/school_management_system_laravel_project_github.pdf
    • https://cdn.sqhk.co/dezorevukor/kjjDljR/remixes_that_are_more_popular_than_the_original.pdf
    • https://cdn.sqhk.co/gorokipo/hxc5pid/mortal_kombat_movie_1995_scorpion.pdf
    • http://websecurer.tech/370197602766bzin.pdf
    • https://cdn.sqhk.co/nojebimit/jgjh3he/jipitunulezojemisi.pdf
    • https://cdn.sqhk.co/labokezugumu/gjZxxgi/need_for_speed_most_wanted_2012_soundtrack.pdf
    • https://cdn.sqhk.co/ropimipaf/lrhficX/free_math_worksheets_converting_fractions_to_decimals.pdf
    • http://netewe8.xyz/at_the_mountains_of_madness_manga_volume_26fap8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dejibokakar.onlinewebshop.net/suxijezadojatejib.pdf
    • https://uploads.strikinglycdn.com/files/fc122d3a-dd2c-4611-9242-dc9e6230c7cd/how_do_you_program_directv_remote_to_tv.pdf
    • https://uploads.strikinglycdn.com/files/7c32061c-3d9e-4f89-87d8-7514be0130fa/52348839560.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef0c.bin
d1d84cba361479c9a81d63f5869a2575bc5f72c8e598a753d79330716d4444ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0C 4596 bytes
font_01_sfnt_off0000fe80.bin
b65c5dd110fa0d52ac4c8df1f51936306c359dd56b7895d28a31271d11f46a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE80 11312 bytes
font_02_sfnt_off0001250f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1250F 4324 bytes

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