Malicious PDF — malware analysis report

Static analysis result for SHA-256 527ec886f15ca9fe…

MALICIOUS

PDF

77.7 KB Created: 2021-05-19 04:30:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9a1f21bd03ce2a5026561190ea03e005 SHA-1: a9fb2abc40a773f2339bfe243e39206fc15c649c SHA-256: 527ec886f15ca9fe187ade471be2865685740fa660b87f2c5aa766aa208b02c6
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://baarspo.ru/strik?utm_term=is+spotify+premium+apk+safe PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484805/normal_602ec536be541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476135/normal_603bff75b87be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403117/normal_5feec9ee994d8.pdfIn PDF document text
    • http://sibidadaduzej.iblogger.org/advanced_beekeeping_manual.pdfIn PDF document text
    • http://kuzojud.66ghz.com/fuxozoregigezofogosoliwar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_604cca6679e76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423732/normal_6066798fb0d66.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/netinuwa/how_to_answer_ethics_exam_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48d3de3d-48d1-4af0-846e-1450dd68682a/pifutudesepoxodopuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/54576014068.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/chatting_cross_platform_fortnite.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/76067199062.pdfIn PDF document text
    • http://fubuwutunofo.rf.gd/merge_two_excel_sheets_remove_duplicates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1098dc89-4d8a-4fcd-9a06-7e7b1ed81fea/93293979706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13528be2-b6a0-4a5d-9632-76effae1d673/xipajigukerosemuvewajujep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/907a4054-ac24-4d86-a579-c31c43b1707b/fawulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a83c8e6-7239-4219-a548-88bb039e585f/jidugato.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/kijesubutorokupofitalo.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/code_review_checklist_template_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85bfd429-bd04-4168-bda2-0d2f973000b6/acres_of_diamonds_audiobook_jentezen_franklin.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/subefowufosimorisabal.pdfIn PDF document text
    • http://joposib.rf.gd/acc_limited_annual_report_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f20b0b5b-21e2-4832-8c77-bf004de0cc67/putezuzalijolu.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/birop.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/camilla_formal_dresses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9de2f68d-434b-4eba-818d-efb2e592cc0b/10118945395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46255317-ba1e-4afb-a269-d08d9d4a7dd8/hp_j4680_power_cord.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_off0000f353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF353 5120 bytes
SHA-256: 44cf68f1f69de50bdd54e30a1209415a6dd318d0d7fd5c4d0b1ea666d267fc25
font_01_sfnt_off000104b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B2 10624 bytes
SHA-256: 49e9bac78cc343f299eef591f9ef2f084582ee25563b8ade2e2d8320815db800

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