Malicious PDF — malware analysis report

Static analysis result for SHA-256 6130a19606b994c3…

MALICIOUS

PDF

79.2 KB Created: 2021-03-23 15:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0a683618182dc35eaa6b4807f7c087c SHA-1: 2200fd224d8ff8e6ff1b746738dae054193d1a55 SHA-256: 6130a19606b994c3bf0b0655f81e16b03fe3af1fe28910f6199191947ebfc3ce
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a site promising game cheats, a common lure for phishing or malware distribution. ClamAV and ML classifiers strongly indicate maliciousness, and the PDF_URI heuristic confirms the presence of an external link. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a second-stage download.

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://seumenha.ru/wix?keyword=hungry+shark+world+all+sharks+unlocked+apk
    • https://cdn.sqhk.co/vivakawibaki/cRfUGia/fuwabilemo.pdf
    • https://cdn-cms.f-static.net/uploads/4491164/normal_5fd36d0ea2c4e.pdf
    • https://cdn.sqhk.co/pozipulavat/g0hdihZ/tavutuwogafugawewalu.pdf
    • https://cdn.sqhk.co/nalawanuxa/p4ogehi/xolavulokefutamigosoke.pdf
    • https://cdn.sqhk.co/mekurapiw/igOVibn/koala_bear_stuffed_animal_walmart.pdf
    • https://cdn-cms.f-static.net/uploads/4371788/normal_601e805d91e4f.pdf
    • https://cdn-cms.f-static.net/uploads/4370528/normal_601ebd08c365d.pdf
    • https://cdn-cms.f-static.net/uploads/4475988/normal_602ee04aec026.pdf
    • https://cdn.sqhk.co/kofuvufexo/UVm3qPO/lakosijufegunexovukosivos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bimumebuzof.epizy.com/35673884946.pdf
    • https://uploads.strikinglycdn.com/files/ffa050c2-7dec-46cd-a06c-6f34d1b48ed1/how_to_test_reading_fluency_online.pdf
    • https://uploads.strikinglycdn.com/files/63786738-f251-4b7e-a85e-e4de2da7f035/gexanizarodoxulezeno.pdf
    • http://mibesajaku.epizy.com/aaos_knee_strengthening_exercises.pdf
    • https://uploads.strikinglycdn.com/files/eb225140-6f3d-4c2a-ab0d-4fbe12af5060/51421422981.pdf
    • http://tujesipi.epizy.com/nizowafi.pdf
    • https://uploads.strikinglycdn.com/files/ef67043a-32ac-4069-8076-fe829acdce9a/63134829591.pdf
    • https://uploads.strikinglycdn.com/files/c69ad344-9916-4bb9-8388-a93d2f6469c0/samsung_srd-842_default_password.pdf
    • http://japefafe.epizy.com/matrix_in_rdlc_report.pdf
    • http://dufeniwa.rf.gd/deep_impact_full_movie_in_english.pdf
    • http://ralopokizuneza.rf.gd/technical_drawing_books_free.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_off0000f715.bin
ffc95457101e8b6c9ccfe86b5da5b0909a8944dabdebfc2c62dc04966d376941
pdf-font-stream PDF embedded font (sfnt) at offset 0xF715 5556 bytes
font_01_sfnt_off00010a10.bin
1ca141e39bba2f6b73cd7a43284a76553b4c7094a427c6e9aaeb7d11be03d498
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A10 11000 bytes