Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4b2fd1d9495fd9…

MALICIOUS

PDF

75.0 KB Created: 2021-03-16 10:08:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0d533f10c2898dfb7e6cc4bf4d735053 SHA-1: 50809c226ff5f44be4e8fc928f77d589e84f906a SHA-256: 1c4b2fd1d9495fd9dd0976e131da28fb1586925b5e14879b8767a21e33775cb5
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.9726

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/award?keyword=bodmas+questions+pdf+for+railway PDF link annotation
    • http://tulomodev.getenjoyment.net/96920406938.pdfIn PDF document text
    • http://remoliwagofaju.mywebcommunity.org/can_illegal_immigrants_get_drivers_license_in_new_york.pdfIn PDF document text
    • https://cdn.sqhk.co/jizapamilizo/yrgj1Wc/frases_de_amor_para_namorado_tumblr_curtas.pdfIn PDF document text
    • https://cdn.sqhk.co/nazabimon/chjWgdB/audience_analysis_report_sample.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/cgipY4G/romuxugavodibupad.pdfIn PDF document text
    • https://cdn.sqhk.co/pakebisas/XgXgc3V/pazegal.pdfIn PDF document text
    • https://cdn.sqhk.co/jogeguzotire/hijihCQ/views_counter_html.pdfIn PDF document text
    • https://popetebebulexu.weebly.com/uploads/1/3/4/3/134316921/37f797d9d7.pdfIn PDF document text
    • https://bawigadumifop.weebly.com/uploads/1/3/4/4/134494387/nipusew.pdfIn PDF document text
    • https://cdn.sqhk.co/kuretunaba/gUgfDgg/3157133685.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/nhbggh4/10752636709.pdfIn PDF document text
    • http://leporabev.mywebcommunity.org/how_to_reset_dsc_neo_panel.pdfIn PDF document text
    • https://cdn.sqhk.co/fibafape/ZlTU0JV/sexasuzubipaj.pdfIn PDF document text
    • https://vifojozajo.weebly.com/uploads/1/3/1/4/131454549/2872229.pdfIn PDF document text
    • https://denutuzuno.weebly.com/uploads/1/3/4/7/134706868/42dbbb31b733.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/kuxegu/70916556293.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/essay_questions_sample_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/tenugodupo.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/kunomodizadizapamoxijumu.pdfIn 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_off0000f14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14C 5556 bytes
SHA-256: 46559e6ad2dca9de54c9c4734a81b0d67ac169490fb9298606b3f2beb260a303
font_01_sfnt_off0001042b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042B 12176 bytes
SHA-256: e9381a240f7fb5041e59e83564428bdf55b01f84f569902879cb7fcb5d37d7b8

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