Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab517dad9ecb75c0…

MALICIOUS

PDF

86.7 KB Created: 2021-03-24 00:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe20e07317bd815988accb0ab0372fe6 SHA-1: 6d3724b0a016f8192a8890c4dc286dcdfe794eeb SHA-256: ab517dad9ecb75c075f47eb0f3dc6bed9d45361b3f72d538b476a8d4d4522e85
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/strik?utm_term=herman+melville+bartleby+the+scrivener+shmoop
    • http://roxelejabojafe.scienceontheweb.net/how_to_start_frigidaire_affinity_dryer.pdf
    • http://zitokujamu.mypressonline.com/dasanirabo.pdf
    • https://kegegizexuf.weebly.com/uploads/1/3/4/0/134042356/zeturesetesoniz.pdf
    • https://cdn-cms.f-static.net/uploads/4485579/normal_6013dab3bfba4.pdf
    • https://cdn-cms.f-static.net/uploads/4501774/normal_602e6f8db7949.pdf
    • https://cdn.sqhk.co/vakinebavun/icmjjja/lunom.pdf
    • https://fosaxobe.weebly.com/uploads/1/3/4/8/134882536/sozujejulumixavux.pdf
    • https://zitadinenere.weebly.com/uploads/1/3/1/8/131871439/3806696.pdf
    • https://cdn.sqhk.co/xeduwukaxusa/jhOHGhd/zombie_hunter_zombie_shooting_games_zombie_games.pdf
    • https://cdn.sqhk.co/kewukapugino/T5Rbjjx/xulusitafovaxetaxowudewaf.pdf
    • http://livemavuxedu.getenjoyment.net/phones_and_allophones.pdf
    • https://janusizexagelu.weebly.com/uploads/1/3/5/3/135337128/todubixexawifa.pdf
    • http://betizekaxu.getenjoyment.net/kojopixinisewiji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nudagimanefej.atwebpages.com/rodgers_and_hammersteins_cinderella_songs_1997.pdf
    • https://uploads.strikinglycdn.com/files/fd778af9-ac8b-41c5-98c0-34fb4a6b1f20/iliad_and_odyssey_nyt_crossword.pdf
    • https://uploads.strikinglycdn.com/files/804ce9b2-5f98-4cd0-911e-0141d26aad47/how_to_troubleshoot_compressor_start_relay.pdf
    • http://zuputes.atwebpages.com/92420214602.pdf
    • https://uploads.strikinglycdn.com/files/a5d49621-acb6-47c8-a7a3-08376bf7ac4c/how_to_use_walgreens_auto_arm_blood_pressure_monitor.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_off000113eb.bin
bbaa9199c6297ef61046a7b819b73290652714e8f53c28fec4a607a2552bd016
pdf-font-stream PDF embedded font (sfnt) at offset 0x113EB 5436 bytes
font_01_sfnt_off0001263c.bin
c512e702300a96366cab9047cbc6c74b7408d530bc56656ef9dd2d6ff5a7caa9
pdf-font-stream PDF embedded font (sfnt) at offset 0x1263C 11964 bytes