Malicious PDF — malware analysis report

Static analysis result for SHA-256 61a83eedf1877770…

MALICIOUS

PDF

92.6 KB Created: 2021-06-09 16:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b84e6dd9eee4c7b51f66f6f94ec9ccf7 SHA-1: 6893b1c0195cba6a97a9cf39b0b12a7bbe5e0e82 SHA-256: 61a83eedf18777700c933d4e323754a4291565991045c60f31c30f7fdcf4801f
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to 'https://resalured.ru/123?utm_term=telugu+3gp+mobile+movies+2019+free'. The document body, though heavily obfuscated, contains text related to movie searches, suggesting a phishing or scam lure. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=telugu+3gp+mobile+movies+2019+free
    • https://cdn-cms.f-static.net/uploads/4412415/normal_602fd161098c2.pdf
    • https://cdn-cms.f-static.net/uploads/4469847/normal_601b187766eee.pdf
    • https://cdn-cms.f-static.net/uploads/4450516/normal_605063ce8b22e.pdf
    • https://cdn-cms.f-static.net/uploads/4472775/normal_604aa5c9c06a2.pdf
    • https://cdn-cms.f-static.net/uploads/4369190/normal_5fe9378532bb6.pdf
    • https://cdn-cms.f-static.net/uploads/4483354/normal_6044615e7c472.pdf
    • http://ssurll.com/10ell2
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://detomipipu.pbworks.com/f/64647034668.pdf
    • http://lakiluxodev.pbworks.com/f/76473374294.pdf
    • http://polujare.pbworks.com/w/file/fetch/144616497/orbit_irrigation_lcd_2-port_digital_hose_digital_hose_faucet_timer_manual.pdf
    • http://pinurakus.pbworks.com/f/kefesugejo.pdf
    • http://mupalunava.pbworks.com/w/file/fetch/144602892/66159105208.pdf
    • https://uploads.strikinglycdn.com/files/b27935f2-0dc2-42b9-95f3-dc5633c2b46c/bose_901_series_iv_owners_manual.pdf
    • http://gudotoxej.pbworks.com/w/file/fetch/144522030/42992628446.pdf
    • https://uploads.strikinglycdn.com/files/36132f00-9317-4485-bbc2-389a59c4df64/grammar_exercises_high_school.pdf
    • http://faxamom.pbworks.com/f/dakofakufejotizepogi.pdf
    • http://degenazi.pbworks.com/f/jutijaridoz.pdf
    • http://kikipudojuzo.pbworks.com/w/file/fetch/144525585/nebeturoneboxenadixedado.pdf
    • http://gatasulupu.pbworks.com/f/is_warcraft_2_free.pdf
    • https://uploads.strikinglycdn.com/files/dfe050c1-4563-4feb-a756-06b89feb985e/jekerelema.pdf
    • http://ropotupi.pbworks.com/f/plant_and_animal_cell_parts_and_functions_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010bd1.bin
314f21185a74cb67f267019a9e622db4e197572819ba06313099c4254c7edec4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD1 5808 bytes
font_01_sfnt_off00011f91.bin
47dbe2879fdd6ad003ff7550174a19ee31104a3a058d02dbd96cf2a1234370e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F91 11808 bytes
font_02_sfnt_off0001480c.bin
27c7ff80f4a7b59fdb0f11d7f4b5d49f9796fa2f18ea856df092e14f8f23d362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1480C 8532 bytes

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