Malicious PDF — malware analysis report

Static analysis result for SHA-256 076b6b14909b2a98…

MALICIOUS

PDF

110.4 KB Created: 2021-03-16 03:59:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12bd986c77b54118b636efd944d115ec SHA-1: 4bb9866c537337ff2721ad34c03aa7641d2bb35d SHA-256: 076b6b14909b2a980d65149fc36d143026d3f679fd3ec39b69fd6298f5591c71
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though truncated and obfuscated, suggests a lure related to 'Avicii piano sheet music', which is likely a pretext to drive users to malicious URLs. The presence of multiple external URIs, including one flagged as a potential phishing lure, supports this. No scripts were extracted, but the PDF structure itself likely contains embedded links or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=avicii+piano+sheet+music+waiting+for+love
    • https://nalokulomegeze.weebly.com/uploads/1/3/4/7/134758193/f61abf1b0a.pdf
    • http://reawont.online/mufotowixupujuvam7yw52.pdf
    • http://art-practice.org/introduction_to_exponential_functions_common_core_algebra_1_homework_answersfs66e.pdf
    • https://cdn.sqhk.co/noruwotil/ejjZiib/amtrak_status_map_midwest.pdf
    • https://cdn-cms.f-static.net/uploads/4470836/normal_604d4d8d8106d.pdf
    • https://static.s123-cdn-static.com/uploads/4372963/normal_5fc80b0755d42.pdf
    • https://static.s123-cdn-static.com/uploads/4527747/normal_5fe4ff7767aa1.pdf
    • https://static.s123-cdn-static.com/uploads/4475852/normal_6003dfaeb3c5b.pdf
    • https://cdn.sqhk.co/gogojiranat/aGBhimM/download_wildcraft_animal_sim_online_3d_mod.pdf
    • https://cdn.sqhk.co/leluforeref/fqjjSgr/busigimufufones.pdf
    • https://cdn-cms.f-static.net/uploads/4369797/normal_60484bdaa2f3c.pdf
    • https://vetinuvejozijuk.weebly.com/uploads/1/3/4/7/134745319/5576705.pdf
    • https://cdn.sqhk.co/tororukiwuri/JirNsjc/dream_island_generator_acnl.pdf
    • http://siankaanmexico.com/best_basketball_shooting_form_drills4bzq7.pdf
    • http://cccckkkkkdd.space/2_piece_puzzle_templaten747z.pdf
    • https://cdn.sqhk.co/xewimoziwuvo/ghdhiJO/classic_labyrinth_3d_apk_full.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://4fd47d7d-96cb-4cdc-943f-55997d715fc9.filesusr.com/ugd/ab3424_37a918c9b01b4c818615e35f375bb1c3.pdf?index=true
    • https://75ca6b5e-a470-4e0e-8004-b00a9f1721b4.filesusr.com/ugd/1e4819_2c03772732314e079e116eeb3c8a00a4.pdf?index=true
    • https://e809654a-a95b-4dbc-a338-24085255a2f8.filesusr.com/ugd/1b6cec_74059bbe9f3a4054ae7cf5cbde3e70b3.pdf?index=true
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_d4fc7e3774a24b72983244453e8d6417.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000152c4.bin
72d9b1624480001e33fe7cee7139cb8b7d10e233e509b238c956a2f6ace110c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152C4 5572 bytes
font_01_sfnt_off000165a9.bin
89825c203c0b610bc368d3595005d7d1001e32f982fc9f0dba91b44024d5e4ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x165A9 15984 bytes
font_02_sfnt_off00019705.bin
46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19705 16120 bytes

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