Malicious PDF — malware analysis report

Static analysis result for SHA-256 21e2a2ea27156168…

MALICIOUS

PDF

79.9 KB Created: 2021-06-08 03:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 275878d1f306b8df45698a7eeae9d74b SHA-1: 55fb45f98e2a91223027366b137aa7a359462b23 SHA-256: 21e2a2ea2715616867ccbfbd075f1ff20cba73eaae801cfce7ce99c0020fbf4d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of an external URI in a malicious PDF strongly suggests an attempt to redirect the user to a malicious site for further compromise.

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://xezojetit.ru/123?utm_term=nutritional+information+acorn+squash+seeds
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zubipuwaf.pbworks.com/f/74212417197.pdf
    • https://uploads.strikinglycdn.com/files/556dd899-ce07-428f-9fcb-a74105fe9edf/35010614549.pdf
    • http://wepoline.pbworks.com/f/how_to_download_tubi_movies_on_iphone.pdf
    • http://kakexigodelo.pbworks.com/w/file/fetch/144545391/duvafosafekisoxor.pdf
    • https://uploads.strikinglycdn.com/files/0b8eb45a-cbc3-43e3-af67-daa6d954e5a2/galadepofurizonazi.pdf
    • http://mamejoniza.pbworks.com/f/game_rpg_offline_mod_apk_android_1.pdf
    • https://uploads.strikinglycdn.com/files/d0a93701-18d7-4a85-8d3c-ba94a50f7e40/what_canned_foods_are_made_in_the_usa.pdf
    • http://juvupumanut.pbworks.com/f/download_adhoc_server_apk_ppsspp_android.pdf
    • http://dejulagimu.pbworks.com/w/file/fetch/144545049/nozumuxanupadevefulinoj.pdf
    • https://uploads.strikinglycdn.com/files/cb96720a-24a9-42fb-aa5b-13bf90a34a63/47130948890.pdf
    • http://wekibivu.pbworks.com/w/file/fetch/144627786/sri_suktam_with_english_meaning.pdf
    • https://uploads.strikinglycdn.com/files/83fb964e-f81a-4348-b637-5b9390470bf4/lexexawisovuzamozolosukav.pdf
    • https://uploads.strikinglycdn.com/files/c44da886-9d75-43c0-8a22-f0a6253beb0e/9576551272.pdf
    • https://uploads.strikinglycdn.com/files/4af78b98-46aa-41c0-809a-e419509116a1/86183236389.pdf
    • http://pebenuziwi.pbworks.com/w/file/fetch/144560091/how_long_do_plasma_tvs_last_in_years.pdf
    • https://uploads.strikinglycdn.com/files/3ab4f809-ad57-44a5-a780-741cfe24d3bd/kiroferagerewolal.pdf
    • https://uploads.strikinglycdn.com/files/87de1111-f01e-43a4-89bc-44db14feb1e9/1._what_is_the_difference_between_nuclear_fission_and_nuclear_fusion.pdf
    • http://kufavuva.pbworks.com/f/konar_tamil_guide_for_class_7.pdf
    • https://uploads.strikinglycdn.com/files/ee8585b4-a06b-4a7b-b6b7-32b98627950f/wabitisodejeselavo.pdf
    • https://uploads.strikinglycdn.com/files/203f6b21-b268-4cc0-ac3b-ddf00a2897e4/woodshop_safety_rules_test.pdf
    • https://uploads.strikinglycdn.com/files/04d9f6eb-03c5-4d0d-888c-308de3f6f09f/zobubupozubuvuz.pdf
    • http://gutogupaxaz.pbworks.com/f/compound_colour_adjectives.pdf
    • http://dijakezepo.pbworks.com/w/file/fetch/144441876/how_to_tell_the_difference_between_axial_and_equatorial.pdf
    • https://uploads.strikinglycdn.com/files/3cc1b073-3d0f-4965-90a7-36ec55f12859/jurassic_world_alive_hack_apk_ios.pdf
    • http://moxulolo.pbworks.com/f/95802054017.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f850.bin
52316ce84758e54f91673d19adebd8a946e7374e61edc566744428f66b2797e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF850 5356 bytes
font_01_sfnt_off00010a59.bin
759b9e6ef6259db8fb135ed0d0840452da9bf15e1482bd774c98ecc97e569d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A59 11592 bytes

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