Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1046c3d6b441a5e…

MALICIOUS

PDF

71.1 KB Created: 2021-03-27 12:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4995a752d72d61463461b187c6e93a2a SHA-1: d718b586921da8f4f703b17d1f142b4e8c0d29a9 SHA-256: f1046c3d6b441a5e7851d8b845cef62385daeff74aa8f89a74d7fbb55936ffba
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points 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, contains text related to 'The shining wallpaper pattern', likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wix?keyword=the+shining+wallpaper+pattern
    • https://minetoleletumu.weebly.com/uploads/1/3/4/7/134767865/badejar.pdf
    • http://reduslimitaly-ufficiale.website/click_rechargeable_fan_bd_price11bd3.pdf
    • https://ralunudedosamot.weebly.com/uploads/1/3/4/8/134856058/zizam.pdf
    • http://drenajkrasnodar.ru/44530119532u3ov0.pdf
    • https://serarabasujuz.weebly.com/uploads/1/3/1/6/131606617/wumibowig_jaxawesog.pdf
    • https://wekupadafar.weebly.com/uploads/1/3/5/3/135315244/wineletilavunud_nizikexuz_todonerejip_kovejevad.pdf
    • http://easy-money-cash.space/jntua_r15_3-1_syllabus_cseg0kae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1d03fdc7-6bcc-4f0e-923e-c3e760fc4cd7/81597987173.pdf
    • http://linakagiwabofa.epizy.com/65472061562.pdf
    • http://zanulewetadom.epizy.com/how_to_calculate_interest_on_custom_duty.pdf
    • http://kedumojuri.rf.gd/competition_law_project.pdf
    • http://mejufupivu.epizy.com/pevururixaxulitokegesi.pdf
    • http://xepujeroniwazip.epizy.com/julepifa.pdf
    • http://fusifovizit.rf.gd/what_is_a_trustee_in_the_methodist_church.pdf
    • https://uploads.strikinglycdn.com/files/c8977b7d-61b8-4f68-b2cf-3baa54487c18/68116786807.pdf
    • https://uploads.strikinglycdn.com/files/ab2cf6cc-06ab-44d2-9d50-39a1dd06906a/how_much_is_a_nextbook_tablet.pdf
    • https://s3.amazonaws.com/dapekufoxiraku/31805266787.pdf
    • http://mapegolirij.epizy.com/79740385673.pdf
    • http://gezixerigalejeb.rf.gd/networking_skills_essay.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_off0000d813.bin
be9fbaf132908f94e079b97430904924bf2ab127528da766ee9ca372503c2877
pdf-font-stream PDF embedded font (sfnt) at offset 0xD813 5124 bytes
font_01_sfnt_off0000e98c.bin
8d171eb36c23fa68a2b21789c6c002fe4bad9e1cff811a89d94173597833af9d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE98C 11144 bytes