Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06ee1b5fdb059b9…

MALICIOUS

PDF

80.5 KB Created: 2021-01-18 17:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 50467573d2f54a5eb49dccd6b7cec0e6 SHA-1: c4100d299451e36cf84f8261f751aa41b0493a4f SHA-256: e06ee1b5fdb059b9d9a3861fd7d3b8522340a1d938c8c0bdfb1b63cb410d92a3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, with the primary URL pointing to a site that appears to be part of an SEO spam or phishing campaign. The PDF structure and embedded content suggest it's designed to redirect users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wb?keyword=mimpi%20buang%20air%20besar%20dan%20membersihkannya PDF link annotation
    • https://togolotokafusaf.weebly.com/uploads/1/3/5/2/135294136/7496198.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452385/normal_5ffbe55a4c6c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457620/normal_5feaec89d73b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421342/normal_5feea4dbe7b20.pdfIn PDF document text
    • https://zesukixugedun.weebly.com/uploads/1/3/4/5/134593530/4926012.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdfIn PDF document text
    • https://wugepazi.weebly.com/uploads/1/3/4/3/134348030/ee6323c3fa62.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tobobowu/2766533070.pdfIn PDF document text
    • http://tuxefefili.epizy.com/97673561874.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/fourth_of_july_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/rifemofokakejuxipawepu.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/49678174627.pdfIn PDF document text
    • http://sovupafol.epizy.com/android_tv_app_store_google.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/numerical_aptitude_test_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/78219268112.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/judson_high_school_counselors.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/5e_monk_guide_drunken_master.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/vindhyachal_express_bhopal_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/guzemamodotemak.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/harmony_elementary_school_supply_list.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/deniwup.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/volkl_rtm_81_2018.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_off0000fbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF3 5652 bytes
SHA-256: 2dc92ce505af217b6802b17726cc74a221c4ced8398254295a14a44470b980ca
font_01_sfnt_off00010f0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0C 10312 bytes
SHA-256: 138a459cdcb1d77363905d1fdb67f29675949d5c26447244982ef0003d8b1725

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