Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c9b89128d2dfb5f…

MALICIOUS

PDF

75.5 KB Created: 2021-03-11 20:14:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ba95f2fce36d79c97047155a9006e12 SHA-1: be19cb96d0940559935985f26c3f96f153f4efda SHA-256: 0c9b89128d2dfb5f6998ae7b032cb7b4025c9bdcc7274cb6b70eaa629dcf3b2d
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains heuristics indicating it is a lure for advance-fee scams and fake invoices. It embeds a URL pointing to a domain that has been associated with malicious activity in the past. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://golowaki.ru/award?keyword=pdf+to+word+online2pdf
    • http://asia.kiwi/81459023364h2hs1.pdf
    • http://xixapewazawa.22web.org/how_to_calculate_exponential_distribution_probability_in_excel.pdf
    • http://jezonikiroka.mygamesonline.org/fisej.pdf
    • http://santand-es.com/daughter_of_invention_questions_and_answersn4hlu.pdf
    • https://cdn.sqhk.co/zumiredosuwi/zhcjkUw/ten_pin_bowling_near_me_deals.pdf
    • http://kikotukujumosif.iblogger.org/delta_bench_band_saw_fence.pdf
    • https://cdn.sqhk.co/luwesefizi/0oKhjaL/38615819428.pdf
    • http://xakujuseboxomov.iblogger.org/ukata_category_a_asbestos_awareness_answers.pdf
    • http://civiliscmq.online/ccna_v6_espaolaum3c.pdf
    • https://cdn.sqhk.co/nakizenonetu/gfhaDMf/75916147915.pdf
    • http://emmetrix.net/kalifibukidnvqk.pdf
    • http://worelimupuvefam.mywebcommunity.org/public_administration_jobs_salary_in_canada.pdf
    • http://septiki-rf.website/modern_simple_powerpoint_templates_freeibtzw.pdf
    • http://bonugonir.22web.org/3042057013.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nokolul.epizy.com/50862538579.pdf
    • https://s3.amazonaws.com/lunojol/magakopadipi.pdf
    • http://zozoresupiz.epizy.com/81971418668.pdf
    • https://s3.amazonaws.com/loneminovu/bujamokidu.pdf
    • https://s3.amazonaws.com/tevigotu/86389345060.pdf
    • http://jafixomedimun.onlinewebshop.net/zasomewaxeximewexevoveso.pdf
    • https://s3.amazonaws.com/rirusozo/fupepatafusokejuxiz.pdf
    • http://nivuzujanux.myartsonline.com/tevidenuvetamed.pdf
    • http://wofekasirirak.rf.gd/omg_bpmn_2._0.pdf
    • http://bixogonabu.epizy.com/5132251325.pdf
    • https://s3.amazonaws.com/tugafebip/81154438970.pdf
    • http://nirenubatimop.rf.gd/what_kind_of_oil_to_use_for_a_generator.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec65.bin
7f37e498a75795d38a76b5d724828db267ef972c15002782355eebab95ee1738
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC65 4872 bytes
font_01_sfnt_off0000fd22.bin
7d582f43113fe2b1ce5c72d2bb25b663f7566405b156bfeb44b63ba2fbf312b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD22 10428 bytes