Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f541f4e6d4ae58…

MALICIOUS

PDF

73.1 KB Created: 2021-03-26 11:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 69f4a0ff2a3403969078b517df2b9a9c SHA-1: ca4000d2cff804cc1f9cb96ddb291b85db1c43d6 SHA-256: 34f541f4e6d4ae5822a42270e05ef31a0fc8386d4989711c498219954db94eb5
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-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://dafemum.ru/123?utm_term=get+facebook+likes+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452373/normal_60420799ac544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459636/normal_600f49ca6ebff.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/8pjdUaq/drag_bike_racers_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_602d7b3d05271.pdfIn PDF document text
    • http://tamawasobo.sportsontheweb.net/ataxia_espinocerebelosa_tipo_2.pdfIn PDF document text
    • https://cdn.sqhk.co/xovenekot/NExMihi/juegos_de_drones_para_android.pdfIn PDF document text
    • http://dirozigumifew.scienceontheweb.net/jijusuleganugamiketefo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378383/normal_600317cb85e35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504554/normal_6021eb133f385.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/OdidghB/osu_mobile_skins.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495244/normal_60255f09ce43c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464055/normal_603876d550770.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/75926653178.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/tisegovofu/zipesilimuvakorerefip.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/ladalubuvikipa.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/vozinumazamikorusuzufamik.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/purdue_owl_works_cited_apa_format.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/wagezipokemikabebo.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_off0000cb87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB87 4828 bytes
SHA-256: 2c42b8cf69ead08c162fc371bd82e74812951b54a89c6d7cb43fbbcf29dd9247
font_01_sfnt_off0000dc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC05 16464 bytes
SHA-256: d401e23c3a63fb30ea802a97cb29fe8920c1d93be5536dcd0408fd2aaf7ff57f
font_02_sfnt_off00010813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10813 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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