Malicious PDF — malware analysis report

Static analysis result for SHA-256 0527be419acdf9e2…

MALICIOUS

PDF

79.6 KB Created: 2021-04-23 09:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3acf56644b545d9018292099115868b SHA-1: 5e7bdb58071ec2b06d045773621a89039412ba9d SHA-256: 0527be419acdf9e21767ebc0f5effdd78c03b806b205e7f3af5e0fef5abf0873
104 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body and extracted URLs suggest a lure for downloading a 'Pmp book rita mulcahy 9th edition pdf free download', which is likely a pretext to deliver a malicious payload. The presence of embedded URLs further supports the attack pattern of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://kuzutuzo.ru/strik?utm_term=pmp+book+rita+mulcahy+9th+edition+pdf+free+download
    • https://vusiwofadenu.weebly.com/uploads/1/3/4/2/134265349/b4a89f45.pdf
    • https://gifuroromila.weebly.com/uploads/1/3/4/3/134377961/jifapogulupaf.pdf
    • https://zomimodobi.weebly.com/uploads/1/3/0/7/130739583/zumalawo.pdf
    • https://cdn.sqhk.co/bisuligiga/cigIlje/49196221305.pdf
    • http://phrensy.co/consonant_blend_worksheets_for_grade_21dxzc.pdf
    • https://wiwojuzikog.weebly.com/uploads/1/3/6/0/136050554/jesevi-jidodud-rurusar-guvuzanagiv.pdf
    • http://idealicacolumbia.site/bagufarupircci3.pdf
    • http://pipvip.ru/dearborn_gas_heater_for_sale5uapn.pdf
    • http://justamorem.com/90661917780cbb7y.pdf
    • https://cdn.sqhk.co/wigatozaduw/cifPidf/air_traffic_control_system_abstract.pdf
    • https://jigudeganulufis.weebly.com/uploads/1/3/6/0/136054519/7167308.pdf
    • https://cdn.sqhk.co/rabovukuvi/RJXghid/riwobelemeno.pdf
    • http://aycotoro5.xyz/making_all_things_new_nouwenlxagy.pdf
    • https://lazarenebuf.weebly.com/uploads/1/3/4/8/134885148/9669b08784dcf8d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tawovojo/22732537959.pdf
    • http://nezenomawaza.epizy.com/pokemon_fire_red_emulator_online_no.pdf
    • https://s3.amazonaws.com/faduxodiwo/82140618827.pdf
    • https://s3.amazonaws.com/kovibu/xiruxasasi.pdf
    • https://s3.amazonaws.com/vikukinumet/dufotuwomesazuridiz.pdf
    • https://s3.amazonaws.com/savukojubusum/61099638662.pdf
    • http://xijixabomama.rf.gd/comprehensive_agrarian_reform_program_issues.pdf
    • http://goruloloxoz.rf.gd/76245134124.pdf
    • http://vujujejinegu.rf.gd/52937039853.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_off0000f595.bin
58ffe92660e8258b1af1e76e054e00a98f5425e3ca5e825a4ad5c20f55b48d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF595 5772 bytes
font_01_sfnt_off0001091d.bin
31fcea20f20b85f79fb65f2ac480a64462ed24d2b5187d1e2c7b19972b384410		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1091D 11648 bytes

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