Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d3d8a6c6766ffa…

MALICIOUS

PDF

82.7 KB Created: 2021-05-19 13:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d86977f8efaaa3dc012be48f10d8d6fd SHA-1: 7818e509b02b5f44ca36d72d2ec4cf53d47f7b30 SHA-256: 93d3d8a6c6766ffa06165194cb3284be87f3013a5ea9a2ccdf75f65097097859
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://kuzutuzo.ru/strik?utm_term=acronis+true+image+2013+free+download+full+version+with+crack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367665/normal_6009b77c90846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_605d03cd3395c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428035/normal_605eedceabb5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456705/normal_602458b382e98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467593/normal_5fcaf96cb1d8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499341/normal_600809ebac40d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447467/normal_5ff13f8131d11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448539/normal_601eb5b677f9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369524/normal_6005cb4f51d17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458145/normal_5fcf8818f0c0d.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/jeponowon/wiwisubuwobogoxujizazalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30928236-2ec8-4cd5-867b-ed272c76e484/shepherd_me_o_god_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6276b7a4-8cc0-466e-8e06-48e7f016d6c4/qu_es_un_estado_de_derecho.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/mofipin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/150cd30b-7aed-4f83-8388-bffdb21b2f3f/33364356304.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/idles_brutalism_mega.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/97334752510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0b7a860-6991-4db3-b975-d185d89dff26/tirofunumedarurevudalej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afa768c9-fb84-4482-a74e-f09d265a486d/whats_the_synonym_of_tiredness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62706ee0-a32f-462c-a0ca-b5103a0b482e/math_tests_for_5th_graders.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF493 6012 bytes
SHA-256: 56bb6146f50813443cca231ad2f4f5080ecf0ca0a2d6f8443843c4e9d5127788
font_01_sfnt_off000108ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108EF 11000 bytes
SHA-256: 2c4b6c3187d5c1ad8f861fbee7a453ed825336423ae931f4cfd08149d36b8288
font_02_sfnt_off00012e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E8F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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