Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d76fcb11531b1f9…

MALICIOUS

PDF

90.8 KB Created: 2021-03-30 14:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8531c995105e3430f5987064da89a3ad SHA-1: 02e72d5743991b14ad0766c52029edaca444444e SHA-256: 5d76fcb11531b1f9de96340e03d0a33ed1c8d712e254e3ddfabf8cb570fc11c4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'lozipotod.ru' suggests it's designed to redirect users to a potentially harmful site, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are strong indicators of a malicious document, possibly leveraging embedded JavaScript for its payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=chuck+e+cheese+pdf PDF link annotation
    • http://gadokuzepot.22web.org/77756867812.pdfIn PDF document text
    • https://roxagidu.weebly.com/uploads/1/3/4/7/134748987/96620.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382420/normal_5fe3f299ba0b1.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/0jdiehj/ssundee_escape_the_prison_fortnite.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473926/normal_6050dbf94179c.pdfIn PDF document text
    • https://zobegutibeg.weebly.com/uploads/1/3/4/9/134902349/6220914.pdfIn PDF document text
    • https://cdn.sqhk.co/pumafuki/UjhUR6g/margherita_chicken_keto.pdfIn PDF document text
    • https://cdn.sqhk.co/nomazotesi/1Qh3KmV/free_prepaid_mobile_recharge_earn_money_online.pdfIn PDF document text
    • http://rekatilugo.iblogger.org/ginidakafalosux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369922/normal_5ff973e424c25.pdfIn PDF document text
    • https://cdn.sqhk.co/gixirunizem/tjd86pB/tumodugixowajosin.pdfIn PDF document text
    • https://cdn.sqhk.co/vigibizez/IYjcIGH/banajapamemenanavuw.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/tobito/34319428653.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/arcsight_esm_administrator_guide.pdfIn PDF document text
    • http://gerekuvuburase.epizy.com/barron_s_sat_flashcards.pdfIn PDF document text
    • http://megoger.rf.gd/kannada_chemistry_of_kariyappa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/gakopatawe.pdfIn PDF document text
    • http://bibuxidon.rf.gd/92745868364.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/ix5000_administrator_guide.pdfIn PDF document text
    • http://gogewarixisude.epizy.com/logoduve.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/2000_honda_civic_transmission_rebuild_guide.pdfIn PDF document text
    • http://xesijapapun.rf.gd/washington_post_magazine_crossword_answers_today.pdfIn PDF document text
    • http://faperolakaf.rf.gd/hollywood_new_latest_movie_filmyzilla._com.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_off0001248c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1248C 4876 bytes
SHA-256: 14a903ed22991f197ca6cb47ebf8a05e570df68d64a3daf17c5ade255f9f08e1
font_01_sfnt_off00013527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13527 12132 bytes
SHA-256: 1e9249e3b9ba9d126d59084717de6c93c3dd39019038708e9bd9be636b424768

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