Malicious PDF — malware analysis report

Static analysis result for SHA-256 0483e64ebd824bb8…

MALICIOUS

PDF

82.4 KB Created: 2021-02-27 12:36:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 86ae08d7f3b0d7ec3e47d70549f4c928 SHA-1: 367a74c19cde3ef85269613bc2a6c171c7e7429e SHA-256: 0483e64ebd824bb88c27d37b9bd3e22b21e27eed02e9314eb59b805ca6f0e46f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link, specifically pointing to 'https://yafferge.ru/123?utm_term=dell+7010+windows+7+driver+pack'. This URL is presented in a context that suggests a lure for driver packs, a common tactic for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL within the document body is sufficient evidence for a phishing attack pattern.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/123?utm_term=dell+7010+windows+7+driver+pack In PDF document text
    • http://japancar-sib.ru/the_dolls_house_by_katherine_mansfield_critical_analysis0mfhv.pdfIn PDF document text
    • http://216tilford.com/86680370726a2omg.pdfIn PDF document text
    • http://jesofoma.getenjoyment.net/31383906443.pdfIn PDF document text
    • http://mavigawika.scienceontheweb.net/12046144017.pdfIn PDF document text
    • http://subuxiwubemew.getenjoyment.net/rafikavelefe.pdfIn PDF document text
    • http://dapajurop.mygamesonline.org/liwos.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/brother_mfc_j5910dw_printer_offline.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/wejuvono/ruretapoluj.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/does_short_term_medical_insurance_cover_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/tivikojulazijunegexikexes.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/xukitorimesofomomokule.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/12351170501.pdfIn PDF document text
    • http://lulanikigog.epizy.com/cryptic_quiz_math_worksheet_answers_d-_75.pdfIn PDF document text
    • http://jutatodimat.epizy.com/dota_2_pangolier_offlane_guide.pdfIn PDF document text
    • http://pusapovewazigu.onlinewebshop.net/nonton_film_the_law_of_attraction.pdfIn PDF document text
    • http://jizubirusetidi.rf.gd/quickbooks_legal_invoice_template.pdfIn PDF document text
    • http://xesidif.epizy.com/level_80_boost_gw2_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/attendance_sheet_in_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/99081256826.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_off0001044d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044D 5556 bytes
SHA-256: 6cb6ea4d88dc12c0e49347628d4027ed85f110785ee0ce327532438d102c50fe
font_01_sfnt_off0001176c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1176C 10824 bytes
SHA-256: b84fdd4c6021131a584827a5f2702e4a62fa977877e5c2c10c918eecd11140c7

Open this report in the interactive analyzer, or submit your own file for analysis.