Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b5f5e37bd31675…

MALICIOUS

PDF

89.5 KB Created: 2021-05-19 19:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e0df272bab2f513ce9dd7e8c6502f8c1 SHA-1: 94e29a79a68003c25a730a33b426ae2f315e3f45 SHA-256: 03b5f5e37bd31675244b7357b8b17b7d27f04e1bdfc9a22c3c956434ecaf6eef
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 0.9964

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://jottigo.ru/strik?utm_term=relapse+prevention+worksheets+therapist+aid PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451945/normal_60309aea76af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458390/normal_5fd101918909c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407813/normal_600d0f4edd2f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416151/normal_600286901265b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461207/normal_6037387af40e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403127/normal_603e7d7d16725.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403681/normal_6016366e9fe06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5fd136df7b57f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481411/normal_60451ed214b5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413570/normal_604712366125e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_603b19801a01f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481513/normal_5fe10569bfb3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468563/normal_605a999fc8627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413842/normal_5fdc3e85f1dd6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372377/normal_6000312ce6bbf.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/votubukaxogilix/free_printable_modern_calligraphy_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/29817449893.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/bibitogudosoge.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/tamil_baby_names_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/what_is_the_name_of_viking_hell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb0f6ce-dfca-41f7-80d6-c493365e81f9/vutetegavafefazodukomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b542460-cd6a-4b2c-b5f3-805ea6a0e795/37800050078.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/7428332987.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/blockchain_explained_ibm.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/banugewexolelediponujosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef23a757-b983-4cb7-881d-d75cd1bcaf11/dedawebugim.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/la_catedral_del_mar_segunda_parte.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/kuzoz.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_off0001209e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1209E 5272 bytes
SHA-256: 450a4fedf1449f6f7db27868d94caabc5a977e683f06d7221d2254299413f84c
font_01_sfnt_off00013296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13296 11108 bytes
SHA-256: 3792f380a3b5d8eeab94946908b45ee5c8b2dc542603d2dbd0111872e06985c0

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