Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e6f35f882a3a78e…

MALICIOUS

PDF

81.7 KB Created: 2021-03-20 16:08:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1718c69cd92c10647a885a596bd41497 SHA-1: 1a1e67c4aadb9f3640f3c89dbbc65c5f73489cb9 SHA-256: 3e6f35f882a3a78eb60dd5d88674d8af6039033595d49a0c7c3394326cd077f3
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 0.9996

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://maypoin.ru/award?keyword=tamil+monthly+calendar+2020+pdf+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421462/normal_6006ea3d5caa7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377400/normal_5fc9070ad7d4b.pdfIn PDF document text
    • http://gilopenomugo.iblogger.org/latoxanalatixok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460447/normal_6038d566b5fa9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401716/normal_5fed9217db258.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471710/normal_6052d2d7b6ca5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://b23183eb-b2e5-455e-bc25-91fac1efd10f.filesusr.com/ugd/cc14e4_76a216862445408ba969b3b8b75379e1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tosego/brown_rice_protein_nutritional_information.pdfIn PDF document text
    • http://niribulikebi.rf.gd/dorukadifejepi.pdfIn PDF document text
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_0806b4fe04d34115a42cc853b60abfdd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widuxade/boating_safety_course_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/landscape_wedding_template.pdfIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_37264e6d11a94c1ea291c2fd33d23ca5.pdf?index=trueIn PDF document text
    • https://965bd944-310b-4209-a71a-d16e45aaced4.filesusr.com/ugd/5f02e6_2a5917abef074bdb8f9d8e8db6810638.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/befafuni/how_to_reset_your_kitchenaid_oven.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/46033851245.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/leckie_and_leckie_higher_english_answers.pdfIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_b06f00983aa24a8a9e802894a4c37bc3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/getizar/tupuwewonurejum.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD973 5420 bytes
SHA-256: cb427577bf0f5a691c90160b16d439897a87145f94269efab4a4694b9a01f3f7
font_01_sfnt_off0000ebbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBD 10040 bytes
SHA-256: 148db1ffe0ba57b30f2b96c735065110d072fc583be7c5886a5bd6adacb99610
font_02_sfnt_off000105a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A3 10928 bytes
SHA-256: d2d734e40f414473a6758ba20b78e7762dc680bee0d4a758d304ede2ab2cd798
font_03_sfnt_off00012ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB3 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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