Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf15726f86ed60d…

MALICIOUS

PDF

79.4 KB Created: 2021-04-05 19:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fce41bab5fe6d16bc26825191e3b8add SHA-1: 519af3164c82b6bf0babf686c35f5f43ed58789a SHA-256: 7bf15726f86ed60dca6a003ba6c461d9d57208768f8338439a13fcb197b43798
126 Risk Score

Malware Insights

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

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 0.9998

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 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
  • 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://lozipotod.ru/wix?keyword=whatsapp+pro+apk+free+download PDF link annotation
    • http://com-signto2.xyz/687283326497yarv.pdfIn PDF document text
    • http://uscovidcharts.com/operations_research_and_financial_engineering0h8oa.pdfIn PDF document text
    • https://gozanesudobewer.weebly.com/uploads/1/3/4/8/134852120/6e16ac4c99c.pdfIn PDF document text
    • http://ragukir.iblogger.org/adana_demirspor_formalar_fiyatlar.pdfIn PDF document text
    • https://zomereke.weebly.com/uploads/1/3/5/3/135397468/mafaret.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/zakofubepuqcnl3.pdfIn PDF document text
    • http://jsexj.fun/tarjetas_para_amor_y_amistad_manualidades344i3.pdfIn PDF document text
    • http://moymagazin.xyz/pomituluqfnh.pdfIn PDF document text
    • http://stalekost.site/how_to_use_a_walgreens_thermometerqvqej.pdfIn PDF document text
    • http://pubggaming.online/zojexubuxinafitadogemus2zfgj.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/856992211895v8ge.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://zumuwezejulo.weebly.com/uploads/1/3/1/4/131455722/4962e7b46be1328.pdfIn PDF document text
    • https://wiwetone.weebly.com/uploads/1/3/4/6/134660192/3352182.pdfIn PDF document text
    • https://vuxidozeni.weebly.com/uploads/1/3/4/6/134669409/dataranibobis.pdfIn PDF document text
    • http://specrazreshenie.com/human_anatomy_and_physiology_amermanwotid.pdfIn PDF document text
    • http://wonder-ita.fun/52117599871dn1bx.pdfIn PDF document text
    • http://sodaapp.club/sql_visual_quickstart_guide_3rd_editionxnn56.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
    • http://boribasumagit.epizy.com/gixugogesakufotuz.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_off0000eb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3D 5036 bytes
SHA-256: 3391114871cfeae60137d8fc8ba4082cca7e6229966723d3d0f86e02120482b0
font_01_sfnt_off0000fc69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC69 10984 bytes
SHA-256: 20615132c12a755be010dc02717ddecbc02c1a51d039c9a15794e75c3028aae2
font_02_sfnt_off0001223c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1223C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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