Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd064e6c43ce9516…

MALICIOUS

PDF

82.6 KB Created: 2021-03-24 23:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bac5a32bde9593811974e47a5755b081 SHA-1: 548e19fd501b4423b7d7fafd5cad344f95f137a5 SHA-256: dd064e6c43ce9516e66b0ebd9a21db4c8473ee493569d96cb0b6c1f0fc1d8cae
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 0.9998

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://nipisod.ru/award?keyword=aneurisma+cerebral+pdf+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484612/normal_5ff83196861b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380395/normal_600f92ee01b4b.pdfIn PDF document text
    • http://moscowflowers.shop/fieldpiece_sman360_problemscs7t4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5fda1499adf5b.pdfIn PDF document text
    • https://cdn.sqhk.co/nozesinipi/qdOSfha/slotomania_facebook_not_loading.pdfIn PDF document text
    • http://particuliers-societegenerale.xyz/96897911862z5xue.pdfIn PDF document text
    • http://snail-case.store/23224054353c5ira.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406501/normal_5fe1c393e77ab.pdfIn PDF document text
    • http://pokemonrivals.online/alien_shooter_3_free_download_for_windows_10stxig.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/cTyihg3/ghost_rider_2007_toys.pdfIn PDF document text
    • http://itdiscounts.pro/facebook.com_device_managerk4kq0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d1b33a7b-cde1-45d4-bc15-d4d3b6236ac5.filesusr.com/ugd/1d64af_87f22edeea124538bf01263861cc6e7e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/98438544721.pdfIn PDF document text
    • https://6e6ad6c0-90f2-4367-a025-4e24aeda1d0e.filesusr.com/ugd/c9b7fc_687dd815457a455ab5b719debb2e4b84.pdf?index=trueIn PDF document text
    • https://8a833fea-7c9a-4d2e-a5a7-d3590f42a3e5.filesusr.com/ugd/9aab09_f04edb347c934b38bbaa583a78f30a95.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/58085461290.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/67270093799.pdfIn PDF document text
    • https://cb71deac-5427-4a11-aec2-6feec017c243.filesusr.com/ugd/4cd983_401eb445eba04ca6aff3464232653c34.pdf?index=trueIn PDF document text
    • https://510adc33-753b-44c0-977e-8d34da8fcdd4.filesusr.com/ugd/5f4192_2c4d09de595f44b1877bc936b29661ec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/fidapiponufifivagoxase.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_off0000ff06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF06 5704 bytes
SHA-256: f3caad7bbeb38c88351bda336aa4b0a2e4b4ecd3aea700ec5b319b089f9a5933
font_01_sfnt_off00011259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11259 13164 bytes
SHA-256: 94e7b4682ae954036f7b1d0d48a669e2ec5916f9d4c2f4b5ddc867149c6afc65

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