Malicious PDF — malware analysis report

Static analysis result for SHA-256 753dd26b857fde8a…

MALICIOUS

PDF

76.8 KB Created: 2021-03-08 04:27:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 76806a4a6eebcedeb33df8d12e19fc54 SHA-1: 823f2863a5ecd676536b09172da8b9b56291c86f SHA-256: 753dd26b857fde8a65dc4efe89a4259f1bd6fcb4a2e91f87acd93a8e403096dc
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. The document body, though heavily obfuscated, contains a URL that appears to be a search result for a common query, suggesting a social engineering lure. The presence of an external URI heuristic further supports the likelihood of the user being directed to a malicious website.

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://leonvi.ru/strik?utm_term=why+does+my+delonghi+oil+heater+smell PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447915/normal_601baaa7cc98b.pdfIn PDF document text
    • https://cdn.sqhk.co/papowepu/ohgPsih/80144050833.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420260/normal_5ff2ca4f9ad9f.pdfIn PDF document text
    • https://cdn.sqhk.co/gixenako/mic9mTS/lucky_money_remittance_kalihi.pdfIn PDF document text
    • https://cdn.sqhk.co/xakalodesi/hejjheJ/56992845421.pdfIn PDF document text
    • http://nivavonuzav.22web.org/vmware_datastore_cluster_best_practices.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wavudipikudela.epizy.com/fopixokukuzododotifukora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/358c813c-b422-4e7a-9098-e640b8c2b2b0/what_are_the_parts_of_a_hot_water_heater.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/42339500277.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/can_fitbit_flex_2_get_wet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/135bcd4b-2729-4c5d-8fa3-5db399336ec4/specific_gravity_of_canola_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/ampli_inverseur_formule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc0c1f2-0a3f-42c3-87cb-684f2eb7b28e/dekaxej.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/jigodidobodap.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/24467404769.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/kenyan_catholic_songs.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECC 5352 bytes
SHA-256: 204c166b52c5aa715dc209763b09b73e214ec056ca82e89bf185dfd389491f15
font_01_sfnt_off000100e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E6 10944 bytes
SHA-256: dd0ae2b7ac22f3c69eb4589424f700a65b708cf26984e212cbca812b1696bfd9

Open this report in the interactive analyzer, or submit your own file for analysis.