Malicious PDF — malware analysis report

Static analysis result for SHA-256 2695a9bbfcf1e35b…

MALICIOUS

PDF

70.0 KB Created: 2021-04-17 16:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2662dddcbcd45421a9a1fa65b8495fb6 SHA-1: d1e129715fcb9d1608601a3ad4cd0825b90d8e65 SHA-256: 2695a9bbfcf1e35b2e38667d2a7b39c4cb79d2786f2e317ba3386f42de6699ce
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. The document body, though heavily obfuscated, appears to be a lure related to 'Dunkin donuts nutrition information pdf', likely intended to trick users into clicking the malicious link.

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://xezojetit.ru/strik?utm_term=dunkin+donuts+nutrition+information+pdf
    • http://tigoxudoxojiwig.22web.org/writing_and_balancing_chemical_equations_worksheet.pdf
    • http://samozanyat.info/norugaziguzapufalelomyyri.pdf
    • http://realwockyc.info/acer_aspire_e15_specs_i7qrf4s.pdf
    • http://worldthailand.fun/zawalepesasomixisbw7.pdf
    • http://safetymirrors.xyz/glacier_bay_water_dispenser_cold_water_button_not_workinghxa8m.pdf
    • http://fringigejy.site/fuwotihmejf.pdf
    • http://haifaiv.ru/how_to_clean_torque_converter_solenoidsa4tm.pdf
    • http://sport-stavki.fun/654899368028u327.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zobawukesilebaf.epizy.com/dekiwugaloragelaberep.pdf
    • http://wafalox.rf.gd/free_magic_books.pdf
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_d77acf7c6fae4890a5b713f2da785b8e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/af24cebf-c990-4007-948f-0fead443aff5/esl_weather_worksheets_for_kindergarten.pdf
    • https://uploads.strikinglycdn.com/files/0143005a-2d10-4370-b128-e906aee1199a/13121417800.pdf
    • https://5e9816b5-e261-4a84-a5c7-594b6999e1c8.filesusr.com/ugd/eb2f7d_71f11729cb7c4fbc9f6d1ad3fc584f7f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9dcca2c1-2856-43e9-b2fd-17dd8a6e2c8f/how_to_find_samsung_tv_code_for_universal_remote.pdf
    • http://wobudesupak.epizy.com/ielts_essay_writing_samples_band_9.pdf
    • https://uploads.strikinglycdn.com/files/5fb01acf-c25d-4e69-9e81-9f165422f320/roadmaster_mt_sport_sx_18_speed_manual.pdf
    • https://18b09f4e-de4d-4c1b-9fe6-be55c63b1c00.filesusr.com/ugd/cd81e9_974e9430c2934a26826e06c879f180e7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a3feb603-37b8-404d-83a9-e76950a4214b/xogawo.pdf
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_ed7b86933cc24590bb9aaa78e2c1e356.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9209b967-198c-4841-bdc0-a378ba285648/94557888638.pdf
    • https://uploads.strikinglycdn.com/files/f191e022-c359-4fb9-8b44-92f9abc1b33b/tepinegubutumerexikunaked.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_off0000d484.bin
bca7e3d65cce869c2ce1e96e64f7da82b2fcf9ed1a6b0d8ea830ffbaecd3745c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD484 5220 bytes
font_01_sfnt_off0000e635.bin
70003c207aabcedbd5a711b5364f9095d1540c8c36fb1fdcaaa272de0620d152		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE635 10532 bytes

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