Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5e7c8be0b549e7f…

MALICIOUS

PDF

86.6 KB Created: 2021-03-22 03:51:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9615ba51f9f47347cad0bb5e97999add SHA-1: 777af7153e8aac2f749624f8504bdd99a9e4133d SHA-256: b5e7c8be0b549e7f8f5b54dfde4b29110bcb8e4bd8aa25393d2f741c0b74dfb2
116 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically 'https://botokaw.ru/strik?utm_term=how+to+use+u8+smartwatch', suggests the document is designed to redirect users to a potentially harmful website. The heuristic 'SE_QR_LURE' also points towards a phishing or social engineering tactic, though it can be used legitimately.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://botokaw.ru/strik?utm_term=how+to+use+u8+smartwatch
    • http://help-lnstagram-verifycopyrgiht.com/what_is_shadow_work_spiritual_meaningrbndg.pdf
    • http://topcabinets.xyz/stormie_omartian_freeansng.pdf
    • https://falojaba.weebly.com/uploads/1/3/0/7/130776150/9084644.pdf
    • https://zepitobazelaki.weebly.com/uploads/1/3/4/6/134619491/e43e2063.pdf
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/7182360.pdf
    • http://organicnu.info/tom_clancys_the_division_2_pc_revieww7hcy.pdf
    • https://cdn.sqhk.co/kagurase/geijSpV/4104545808.pdf
    • http://fapseo.ru/famixeserubuguze9njyo.pdf
    • http://affilateapp.online/cognitive_psychology_research_positionsrqzzc.pdf
    • https://cdn.sqhk.co/femokuxajuz/jhiaror/finuxenakuveponitodopi.pdf
    • https://vuvopovakufusoz.weebly.com/uploads/1/3/4/3/134342968/nisodimax_tovowo_robonuje_lolupavasa.pdf
    • https://cdn.sqhk.co/zokirafuka/hinjenQ/html5_admin_template.pdf
    • http://nipikul.22web.org/sanejefeviwekilodurumu.pdf
    • http://pubguckazan.com/nibopavunatozexomixwqckz.pdf
    • http://detonic-shop.website/59449816953s08wt.pdf
    • https://cdn.sqhk.co/poxosafixe/arjiIws/eolien_offshore_le_treport.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lowazuxakosilal.epizy.com/giradiva.pdf
    • https://s3.amazonaws.com/ladojenefe/kedetakugusagi.pdf
    • https://s3.amazonaws.com/mosezavor/is_omron_the_best_blood_pressure_monitor.pdf
    • http://pikuvideposem.epizy.com/parse_error_fix_android_box.pdf
    • https://s3.amazonaws.com/fowikorejodi/7251868984.pdf
    • https://s3.amazonaws.com/rikolesafuwofar/sas_ods_excel_tagset_styles.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_off000107b6.bin
4fe1f96ba8db5cf35ca47cddaf067669eaebb9c038fc61eabfa1f5836d0fc525		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107B6 1768 bytes
font_01_sfnt_off0001105c.bin
84f0b028e15f895c809c26d66a983230c5cfc8f2a5539027c5396acb20e57c23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1105C 5256 bytes
font_02_sfnt_off00012219.bin
d8a0ed3d51c18da9edba946590af81a1bb21d4744e63da27cd153f3422d00c1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12219 12228 bytes

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