Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a401a8ad9c9547…

MALICIOUS

PDF

78.1 KB Created: 2021-03-11 10:06:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45e63239e4ec923993806353c17851c6 SHA-1: 5bbe5f1ebac7656a322a272a96137a12a5cc5638 SHA-256: 39a401a8ad9c9547fd0be8b984376739a5002035bf767973ac72ede3d6df86ab
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to song lyrics, suggesting a phishing or malware delivery attempt. No scripts were extracted, but the presence of an external URI and the ML/ClamAV detections strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://soxebez.ru/award?keyword=rock+of+ages+cleft+for+me+lyrics+pdf
    • https://static.s123-cdn-static.com/uploads/4389585/normal_60066b66c413d.pdf
    • http://reawolt.online/matrix_authorization_strategy_pluginghiek.pdf
    • http://bojidodug.iblogger.org/believe_in_yourself_book_free_download.pdf
    • http://ponarolo.22web.org/glenfield_model_60_scope_base.pdf
    • https://static.s123-cdn-static.com/uploads/4451744/normal_5ff9020a62f22.pdf
    • https://cdn-cms.f-static.net/uploads/4424991/normal_5fd63c36bb15b.pdf
    • http://rubyshup.space/gewefabujokalimuwovawali7nuit.pdf
    • http://maddot.space/58458720387rweoz.pdf
    • https://cdn-cms.f-static.net/uploads/4384459/normal_603220df6e1ac.pdf
    • http://steelsho3.club/41588515869azvch.pdf
    • http://nanolenka.xyz/73996106073olk4m.pdf
    • https://cdn-cms.f-static.net/uploads/4485704/normal_602c432dd2673.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/fasudikek/how_long_to_bake_a_medium_sized_sweet_potato.pdf
    • https://uploads.strikinglycdn.com/files/a87eca8c-306f-4b56-b58e-400d6d359d8e/sawuwezegigigajafedagideb.pdf
    • https://598a1783-db1d-4ebb-96f5-d3ad23e1e090.filesusr.com/ugd/ae99eb_84b70338ccad4d219ebd8742268e587a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6a399f5e-8cec-4fdd-9ec4-5c7f912ac4ac/what_does_double_down_mean_slang.pdf
    • https://bbf05351-1c49-455c-8ea8-df349977a4d5.filesusr.com/ugd/15c6d6_845db234552247d6a84c9e61c2de1825.pdf?index=true
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_0b22b1b7187f4a25ab5b80096ad894fd.pdf?index=true
    • https://s3.amazonaws.com/kokesatodixon/bismillah_karan_song.pdf
    • http://jesowafifu.rf.gd/89223782873.pdf
    • https://s3.amazonaws.com/wifukedot/5665874134.pdf
    • http://zoforex.rf.gd/imf_world_economic_outlook_report_october_2018.pdf
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_940aa862305a4afc89d389226a75c5fe.pdf?index=true
    • https://uploads.strikinglycdn.com/files/42154408-9397-4e86-a2cd-0a14415cb23e/domakebafu.pdf
    • http://fujeraxujixu.epizy.com/eritema_toxico_tratamiento.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_off0000e743.bin
029d35df6f9c6738f5951b240f07bc75021d17e38eb50f6d30b0656f969e9b49		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE743 5328 bytes
font_01_sfnt_off0000f972.bin
3f37604bc4d7f6fa897883b814b14b21c14f1833af853c973d39fe6c687a61e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF972 10308 bytes
font_02_sfnt_off00011cae.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAE 4324 bytes

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