Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69fa2d4dc8d2d80…

MALICIOUS

PDF

107.2 KB Created: 2021-05-19 05:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e6ad55834a706f2efea4727f8bca3f95 SHA-1: ecad726b1abaf121aa122238ac98da3acdfb46d0 SHA-256: f69fa2d4dc8d2d80034f18bd9fc2f35c486bc4246bed18d4f73841634b0ea8e1
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 0.9997

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://nipisod.ru/strik?utm_term=how+to+inject+igf-1+lr3 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4458829/normal_5ff37d70b9a1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453891/normal_606e32160c8dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388819/normal_601731f451766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_6017c36f454c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473419/normal_6054230f632fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427095/normal_6008fca5808b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446497/normal_6014db489f7e0.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://uploads.strikinglycdn.com/files/a563d25c-3a2e-460c-9820-ccdf1c6941c0/que_es_una_propuesta_didactica_en_infantil.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/magutopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6a735b9-272c-4d36-9069-ed5fd43d8741/zemiji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20b05b08-f662-4887-a800-9a0f1ec0c3bc/sivifoxeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e194a2-56ee-4b40-aefd-57caaa80ede7/lokuvakibigoko.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/logitech_m557_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb665731-bd43-45a2-b050-d178a9d4b1e5/new_2018_lexus_gx_460_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/89332399069.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/46295707279.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/55487509290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/456e9ee8-1a75-43ac-90fd-6178e31ed1d4/brewing_classic_styles_schwarzbier.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/the_absorbent_mind.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000143a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143A5 4828 bytes
SHA-256: 20c32c3bec24122cf1f0f7d9da8913123c945bad6e903bb901cc23b696576737
font_01_sfnt_off00015441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15441 11696 bytes
SHA-256: 0bbb2be951bc91b9e5b2ca852eea7eac932f50a83fc42a49067e8bb71c108cf3
font_02_sfnt_off00017c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C72 16148 bytes
SHA-256: 43dd7310e986e37c0562d6efd2a67b6291a0d41fa892ecd43b306c3e7231f7b7
font_03_sfnt_off00019169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19169 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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