Malicious PDF — malware analysis report

Static analysis result for SHA-256 21ba392567e9cba2…

MALICIOUS

PDF

87.9 KB Created: 2021-05-19 09:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ae34c4167ea3243c10706393e0079b8f SHA-1: 5ff448e655f53c579aa43021091616732ccffd1f SHA-256: 21ba392567e9cba2c400eff54d1229d0f749b613b77530ce00fb0784c0b926f9
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to car warning lights, aiming to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://druttle.ru/strik?utm_term=what+does+the+orange+triangle+light+mean+in+a+car PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385437/normal_603f0621c5655.pdfIn PDF document text
    • http://waguzeb.66ghz.com/data_clustering_algorithms_and_applications_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_60637a23741b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475588/normal_5fcaf31c43a63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375705/normal_6007b8b2cc4b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409819/normal_605efeef1e6d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453329/normal_5ffe08dbd6a61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_604a9f5a417dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374366/normal_5fdb670cc28ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488349/normal_6005f70e028ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427095/normal_604d0d249d367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487192/normal_60130d84a7ea3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410983/normal_5fdc99bce1298.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486563/normal_6067d561520bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401555/normal_5ff53f84c58c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378856/normal_6009817ba0f16.pdfIn PDF document text
    • http://diletemofuvufu.22web.org/19992863223.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381294/normal_5fc8097800be9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://filawobabadi.epizy.com/5_proofs_of_gods_existence_by_st._anselm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e028035-35c0-4bf9-9b7b-8998dc454954/p90x_workout_schedule_lean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51a2f87b-dc49-4f27-b67b-477140e78d05/dawupuxujo.pdfIn PDF document text
    • http://zorogeloma.epizy.com/combining_sentences_worksheets_3rd_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a575d8-6946-49ef-9e8f-5965039faa04/lg_g_pad_7.0_instruction_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2365194-7d20-427a-8a64-bec439e9dda8/everybodys_protest_novel_quotes.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_off0001198a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1198A 5364 bytes
SHA-256: b743e4ec4ef222326a9cc1389097ddf8d333c8c858b40eea11e8bfa462798246
font_01_sfnt_off00012bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BAB 11104 bytes
SHA-256: 193384d2f649b77b2192adba6093eb6a2541ead981a3a0f65dfc614928ef5599

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