Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7e391f858b2c80e…

MALICIOUS

PDF

83.1 KB Created: 2021-03-19 14:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1a89b59e81e3a7c631733e600aff1152 SHA-1: 97b552ca2653ef4c65d0fb60874a0548d62bca10 SHA-256: f7e391f858b2c80eb8f76a94f623e6cc6c5a6b760897a962f616ae658bb5f248
156 Risk Score

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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://baarspo.ru/wix?keyword=ford+think+owners+manual PDF link annotation
    • http://leree6.club/how_to_sync_petsafe_shock_collar961gj.pdfIn PDF document text
    • http://uabiomanix.xyz/xatenugugatamiwomojojavas3bb.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/zafujalefapimjjzfp.pdfIn PDF document text
    • http://azorocheat5.xyz/pefotokevawja0p.pdfIn PDF document text
    • https://suveruwifofe.weebly.com/uploads/1/3/1/3/131380558/zikugekujekegegojefi.pdfIn PDF document text
    • http://zarabatyivat.ru/92516645443tdo0b.pdfIn PDF document text
    • https://fexasesari.weebly.com/uploads/1/3/1/0/131070539/4257523.pdfIn PDF document text
    • https://budovabi.weebly.com/uploads/1/3/4/5/134510119/8131113.pdfIn PDF document text
    • https://penuwepilaxol.weebly.com/uploads/1/3/4/7/134756509/8898045.pdfIn PDF document text
    • http://reestr.site/38567676222puhiu.pdfIn PDF document text
    • http://matteset-spon.space/noper2dqpr.pdfIn PDF document text
    • https://didoruzokikad.weebly.com/uploads/1/3/0/7/130739542/zabubufek-lilas-mikulizeg.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/tometubufimopim/welalekuf.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/wipuzerurokip.pdfIn PDF document text
    • http://runonadopufeta.epizy.com/tinejaposoloraw.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/addendum_template_word_document.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/c._t._a._s_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/latest_ipad_update.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/salary_of_data_analyst_in_dubai.pdfIn PDF document text
    • http://lokimutopilar.epizy.com/xozoko.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/fugodubefusivij.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/file_folder_template_ai.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/loxoxomojujuxetoguz.pdfIn PDF document text
    • http://genufewewirim.rf.gd/63873895388.pdfIn PDF document text
    • http://seluzapiz.rf.gd/sat_subject_test_korean_with_listening.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/90808745685.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_off0000fafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFC 5060 bytes
SHA-256: 5798adb7ae274753c5032afb53d74eefa2ebe3fec24c2790bb9eefa4840259bf
font_01_sfnt_off00010c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C10 10676 bytes
SHA-256: fb0c2ef6fd277d54de51bc4f2373ecb23b653f0241669bdfd646a27e9ff755cf
font_02_sfnt_off00013099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13099 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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