Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac7e5537ec368e9…

MALICIOUS

PDF

80.1 KB Created: 2021-05-16 05:19:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: d44e9c5441e04b5d36f3741b43f23ae3 SHA-1: 28d4cf51dfc4c8676c367e5f6246d428f538d2a1 SHA-256: 9ac7e5537ec368e910805c5a8c30e3da031933521e6202b2f6aeaff9cdc9031e
96 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 presence of embedded URLs, specifically `https://dugedepap.ru/strik?utm_term=12+and+12+tulsa+visiting+hours`, suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to 'tulsa visiting hours' which could be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=12+and+12+tulsa+visiting+hours PDF link annotation
    • https://cdn.sqhk.co/fekoguwiwu/iaib9jj/x_launcher_pro_version_1._0._0.pdfIn PDF document text
    • http://nout-prokat.website/epf_withdrawal_form_2019mszz1.pdfIn PDF document text
    • https://cdn.sqhk.co/jibezilesu/hfP6L4z/55084044836.pdfIn PDF document text
    • http://7gusevshop.website/27262669965g59lr.pdfIn PDF document text
    • http://skidki-day.store/modern_methods_of_teaching_sanskrit08bpw.pdfIn PDF document text
    • http://reduslim-shop.site/influenza_consent_form_templatebwt1f.pdfIn PDF document text
    • http://misstourist.info/convert_my_mini_dv_tapes_to_digital6zjyr.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/how_to_draw_a_building_step_by_step_easy5bzwf.pdfIn PDF document text
    • http://esclub.pro/311307065504izwf.pdfIn PDF document text
    • http://tapavinologo.mygamesonline.org/tafiwokajoraluk.pdfIn PDF document text
    • http://reassurez-moi-fr.info/the_mortal_instruments_city_of_bones_gay_characterspiilo.pdfIn PDF document text
    • http://1cats.space/lavixy1jf8.pdfIn PDF document text
    • http://btsworld.org/heart_failure_reduced_ejection_fraction_guidelineslfdsm.pdfIn PDF document text
    • http://redirunna.xyz/41426191923f3plu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/wenupus.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/jipexodavojupakudube.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/31258175600.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/emotional_status_video_female_version.pdfIn PDF document text
    • http://nupuzawov.onlinewebshop.net/capitalism_economy.pdfIn PDF document text
    • http://xirexadugimog.atwebpages.com/20456205876.pdfIn PDF document text
    • http://romakilax.myartsonline.com/fafag.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB1 5236 bytes
SHA-256: e4c237eb0a609ecaf2c55fab1814433ad74c99a9bcd4f3bd693bd894b341e2b0
font_01_sfnt_off00010c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7C 11592 bytes
SHA-256: 3eb99bb391bb797f0951a907dd3e9b0dc4d326b6c891e4d055d34cc1217f6ab3

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