Malicious PDF — malware analysis report

Static analysis result for SHA-256 c88843eaf17c5306…

MALICIOUS

PDF

141.8 KB Created: 2021-02-26 01:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 09f079a6460c0a7f749763113cbc0a19 SHA-1: 96c8ba86c222f1a6235ea9bb75f8bb3bb0db2d30 SHA-256: c88843eaf17c530655f308e11ee7781547dbbb67d32da44a0bddac576e3f0f9b
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 0.9982

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://crophysi.ru/strik?utm_term=samsung+wb1100f+owners+manual PDF link annotation
    • http://fejukoturig.medianewsonline.com/tampa_alissa_nutting_epub_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423171/normal_60349e8f83214.pdfIn PDF document text
    • http://desokore.medianewsonline.com/mamiya_rb67_professional_s_digital_back.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419820/normal_6031861c42524.pdfIn PDF document text
    • http://naziniza.22web.org/antilog_table_base_10.pdfIn PDF document text
    • http://mignonette.space/what_does_duty_to_god_mean_cub_scoutsomkie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390366/normal_5ff49a468acd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_60152f8e5bb93.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jukezeluf/manifesto_pakatan_harapan_perak_2018.pdfIn PDF document text
    • http://kimizajoveso.epizy.com/wubewemopirojinoti.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/beco_baby_carrier_manual.pdfIn PDF document text
    • http://zujebagita.epizy.com/87176796705.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/63558400279.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bc26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC26 3196 bytes
SHA-256: ddcd2076abfdaf6303cc6c08515ed243bf528a1e61057c1c21009336e42d1082
font_01_sfnt_off0001c792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C792 5372 bytes
SHA-256: 9744eee3e4c026fec008634ad1d4580328e8a36b3f7de42f6f14807dec7f3e4c
font_02_sfnt_off0001d9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D9C6 13052 bytes
SHA-256: 27ddd7aac9d53f29e3c0587843ae549e7d9aaac1958fddf40b3cb396efb99308
font_03_sfnt_off000204d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x204D1 16348 bytes
SHA-256: 44344d777475bc27302cf71c6ce9e96b5edcb3cf6b8673c7cacff1863add0d01
font_04_sfnt_off00021aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21AA9 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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